{ "data": { "a": { "slug": "open-meteo", "name": "Open-Meteo", "vendor": "Open-Meteo", "vendorUrl": "https://open-meteo.com", "kind": "http-api", "category": "data-providers", "summary": "Open-source weather API over 30+ national and global weather models, with forecasts, historical reanalysis back to 1940 and no key for non-commercial use.", "url": "https://www.anchorterminal.com/tools/open-meteo", "markdownUrl": "https://www.anchorterminal.com/tools/open-meteo.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/open-meteo.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/open-meteo.json", "repo": "https://github.com/open-meteo/open-meteo", "license": "AGPL-3.0 (code), CC BY 4.0 (data)", "transports": [ "http" ], "remoteUrl": "https://api.open-meteo.com/v1/forecast", "packages": [], "auth": "none", "authNotes": "No key for non-commercial use. Commercial plans add `\u0026apikey=` on customer-api.open-meteo.com.", "pricing": "freemium", "pricingNotes": "Free for non-commercial use at 600 calls a minute, 5,000 an hour, 10,000 a day and 300,000 a month. Commercial plans for 1M, 5M and 50M+ calls a month show prices only at Stripe checkout, and monthly caps aren't enforced yet, with email alerts at 80, 90 and 100 per cent instead (https://open-meteo.com/en/pricing).", "priceSummary": "Freemium", "where": "hosted", "x402": { "level": "no", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 6200, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-26" }, "docsUrl": "https://open-meteo.com/en/docs", "openapi": "https://github.com/open-meteo/open-meteo/blob/main/openapi/forecast.yml", "capabilities": [ "data.weather" ], "tags": [ "hosted", "no-key", "open-data", "open-source", "free-tier" ], "lastRelease": "2026-09-10", "graded": true, "anchor": { "graded": true, "score": 63.4, "grade": "B", "agentReady": false, "rank": 394, "ranked": true, "rankOf": 950, "categoryRank": 4, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 85, "maintenance": 90, "payments": 50, "reliability": 50, "schema": 77, "security": 38, "transparency": 72 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "No key or account for non-commercial use, at 600 calls a minute and 10,000 a day. Commercial prices appear only at Stripe checkout.", "bestFor": "Prototypes, personal agents and non-commercial apps that need forecasts or historical weather with no signup.", "strengths": [ "No key or account for non-commercial use, at 600 calls a minute and 10,000 a day", "OpenAPI 3.1 files for nine APIs with an enum for every weather variable", "Five releases between 11 July and 10 September 2026, AGPL-3.0 code and CC BY 4.0 data", "Logs deleted after 90 days and no cookies or trackers, per the terms", "Official Python and TypeScript SDKs" ], "weaknesses": [ "Commercial prices appear only at Stripe checkout", "The commercial key is sent as `\u0026apikey=` in the URL", "Status page is uptime monitors with no incident write-ups we could read", "Terms change on posting and IPs can be blocked without notice", "No llms.txt, no official MCP server, and the OpenAPI files aren't linked from the docs" ], "agentNotes": [ "Name only the variables you need in `hourly=` or `daily=`, because each one adds a full time series", "Credit 'Weather data by Open-Meteo.com' wherever you show the data", "Use customer-api.open-meteo.com with `\u0026apikey=` for anything commercial, and keep that URL out of logs", "Read `reason` on a 400. It names the bad parameter", "Cache by coordinate and model run, since global models update about every six hours" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 4, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 63.4 } ], "editorialScores": { "ergonomics": 85, "maintenance": 90, "payments": 50, "reliability": 50, "schema": 77, "security": 38, "transparency": 70 }, "provenanceScore": 73, "dataQualityScore": 80 }, "connect": { "http": "curl \"https://api.open-meteo.com/v1/forecast?latitude=51.51\u0026longitude=-0.13\u0026hourly=temperature_2m,precipitation\u0026forecast_days=2\"" }, "letme": { "capability": "https://letme.dev/data.weather", "tool": "https://letme.dev/open-meteo" }, "alsoIn": [ "weather" ], "area": "web-data", "provenance": { "legalEntity": "OpenMeteo GmbH", "domain": "open-meteo.com", "domainRegistered": "2021-04-27", "endpointOnVendorDomain": true, "terms": "https://open-meteo.com/en/terms", "privacy": "https://open-meteo.com/en/terms#privacy", "statusPage": "https://status.open-meteo.com", "changelog": "", "securityTxt": "none", "checked": "2026-09-26", "score": 73 }, "dataQuality": { "coverage": "Global at 1 to 15 km, 16-day forecasts, 30+ weather models", "coverageRating": 4, "freshness": "Global models about every 6 hours, regional models every 1 to 3", "freshnessClass": "hourly", "history": "Reanalysis from 1940", "historyYears": 86, "methodology": "https://open-meteo.com/en/docs/historical-weather-api", "sourcesDisclosed": true, "licence": "CC BY 4.0", "licenceClass": "open", "standing": "", "standingClass": "none", "reuse": "CC BY 4.0, so caching and redistribution are fine with credit. Commercial use of the API needs a paid plan.", "score": 80, "checks": null }, "pageJsonUrl": "https://www.anchorterminal.com/tools/open-meteo.json", "live": { "slug": "open-meteo", "probe": { "target": "https://api.open-meteo.com/v1/forecast", "method": "get", "lastAt": "2026-10-10T04:40:58.131226047Z", "lastOk": true, "lastStatus": 200, "lastMs": 104, "authRequired": false, "uptime24h": 98.79, "uptime30d": 99.27, "p50ms24h": 113, "p95ms24h": 205, "samples24h": 248, "samples30d": 3438, "days": [ { "date": "2026-09-27", "probes": 132, "ok": 131 }, { "date": "2026-09-28", "probes": 285, "ok": 283 }, { "date": "2026-09-29", "probes": 286, "ok": 286 }, { "date": "2026-09-30", "probes": 286, "ok": 284 }, { "date": "2026-10-01", "probes": 276, "ok": 273 }, { "date": "2026-10-02", "probes": 248, "ok": 245 }, { "date": "2026-10-03", "probes": 271, "ok": 268 }, { "date": "2026-10-04", "probes": 272, "ok": 269 }, { "date": "2026-10-05", "probes": 272, "ok": 271 }, { "date": "2026-10-06", "probes": 272, "ok": 271 }, { "date": "2026-10-07", "probes": 272, "ok": 270 }, { "date": "2026-10-08", "probes": 268, "ok": 267 }, { "date": "2026-10-09", "probes": 250, "ok": 247 }, { "date": "2026-10-10", "probes": 48, "ok": 48 } ] }, "vendorStatus": { "page": "https://status.open-meteo.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-10T00:50:54.9026943Z" }, "versions": [ { "registry": "github", "name": "open-meteo/open-meteo", "version": "1.6.0", "released": "2026-09-10", "seenAt": "2026-10-09T17:09:47.247934315Z" } ], "githubStars": 6318, "securityTxt": { "url": "https://open-meteo.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-09T15:40:28.460254115Z" }, "domain": { "domain": "open-meteo.com", "registered": "2021-04-27", "source": "https://rdap.verisign.com/com/v1/domain/open-meteo.com", "checkedAt": "2026-10-04T13:10:29.927007329Z" }, "pages": [ { "url": "https://open-meteo.com/en/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-09T18:42:38.913325343Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "d8e166b3f66d" }, { "url": "https://open-meteo.com/en/terms", "kind": "terms", "status": 200, "checkedAt": "2026-10-09T18:42:40.986477227Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "c2aba52bfa00" } ], "updatedAt": "2026-10-10T04:40:58.131226047Z" } }, "answer": "Open-Meteo scores 63.4 (B) on agent readiness against The Weather Company Data APIs's 52.6 (D), and leads in 5 of 7 scored categories. The Weather Company Data APIs leads on reliability and security \u0026 auth.", "b": { "slug": "weather-company", "name": "The Weather Company Data APIs", "vendor": "The Weather Company, LLC", "vendorUrl": "https://www.weathercompany.com", "kind": "http-api", "category": "weather", "summary": "The Weather Company Data APIs return current conditions, forecasts to 15 days, historical data, government alerts, imagery and aviation weather from the company behind weather.com. Access is by API key at `api.weather.com`, sold in packages to businesses.", "url": "https://www.anchorterminal.com/tools/weather-company", "markdownUrl": "https://www.anchorterminal.com/tools/weather-company.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/weather-company.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/weather-company.json", "license": "Proprietary service. Use is under a content licensing agreement with The Weather Company, which is not published", "transports": [ "http" ], "remoteUrl": "https://api.weather.com", "packages": [], "auth": "api-key", "authNotes": "An API key is required and is sent as the `apiKey` query parameter on every request. No header option is documented. Keys are not self-serve. A person requests a 30-day trial by form or contacts sales, the company provisions the key, and the key is read in the API customer portal after an invitation. Each key is entitled to the endpoints in the customer's package, and an endpoint outside it returns 401.", "pricing": "paid", "pricingNotes": "Standard package $500 a month on an annual plan for 1 million API calls. Enterprise plans and add-on packages are by quote, and overage is charged as the contract defines. A free 30-day trial allows 50,000 calls a day at 100 a minute, is requested by form and is limited to enterprise customers, so an agent cannot start without a person and sales approval (checked 2026-10-08).", "priceSummary": "$500 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the developer documentation, the API references or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://developer.weather.com/docs/home", "capabilities": [ "weather.current", "weather.forecast", "weather.historical", "weather.alerts", "weather.marine", "data.weather" ], "tags": [ "hosted", "paid", "enterprise", "sales-led", "closed-source", "status-page", "api-key", "aviation", "air-quality" ], "lastRelease": "2026-09-14", "graded": true, "anchor": { "graded": true, "score": 52.6, "grade": "D", "agentReady": false, "rank": 734, "ranked": true, "rankOf": 950, "categoryRank": 9, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 54, "maintenance": 36, "payments": 20, "reliability": 73, "schema": 67, "security": 48, "transparency": 49 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "A wide weather data API with 168 API references built from OpenAPI documents, global 4 km current conditions, hourly history from June 2015 and a status page with component history. Keys come only through a sales-reviewed trial or contract, travel only in the URL, and the terms that govern the API are not published.", "bestFor": "A business that wants one contract for global forecasts, 4 km current conditions, alerts, imagery, aviation and deep history, and that can go through sales.", "strengths": [ "168 API reference sections on developer.weather.com are generated from OpenAPI documents, with enums, patterns, required fields, example responses and 13 response codes per operation.", "The Standard package covers current conditions, daily and hourly forecasts to 15 days, alerts from six national agencies, imagery, marine tiles, tides and air quality.", "History on Demand returns hourly gridded history at about 4 km from June 2015, in JSON, CSV or Parquet, with paging, field selection and a compact mode.", "The status page lists 16 components. Its feed shows nine incidents between 10 July and 8 October 2026, all rated minor or none.", "The Standard package price is public, $500 a month on an annual plan for 1 million calls, and the trial allows 50,000 calls a day for 30 days." ], "weaknesses": [ "No self-serve signup. The trial is requested through a form, is limited to enterprise customers, and the Buy now button opens a contact form.", "The API key is accepted only as the `apiKey` query parameter, so it appears in every request URL. No header option is documented.", "The website terms of use say they do not apply to the data APIs and point to separate terms, which we did not find published.", "Exceeding a rate limit returns 401, the same status as a missing key. No 429, Retry-After or backoff guidance is documented.", "No llms.txt, no downloadable OpenAPI file, no official SDK and no MCP server were found. Only one dated changelog entry appeared in 42 API references sampled." ], "agentNotes": [ "Send `units`, `language` and `format=json` with a location on every v3 call, plus `Accept-Encoding: gzip`, which the usage guide marks as required.", "Keep the key out of logs and client-side code, because it travels in the query string as `apiKey`.", "Treat a 401 as either a bad key, an endpoint outside the key's package or an exceeded limit, and treat a 204 as no data for the query.", "Each forecast duration (`3day` to `15day`) is a separate entitlement. Request only durations the contract covers.", "Use `/v3/aggcommon` to combine up to 10 products in one request. Each product and each location still counts as one call." ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 52.6 } ], "editorialScores": { "ergonomics": 54, "maintenance": 36, "payments": 20, "reliability": 73, "schema": 67, "security": 48, "transparency": 20 }, "provenanceScore": 77 }, "connect": { "http": "curl --compressed \"https://api.weather.com/v3/wx/forecast/daily/3day?geocode=33.74,-84.39\u0026units=e\u0026language=en-US\u0026format=json\u0026apiKey=$TWC_API_KEY\"" }, "letme": { "capability": "https://letme.dev/weather.current", "tool": "https://letme.dev/weather-company" }, "area": "domain-data", "unitPrices": [ { "item": "Standard package, annual plan", "unit": "month", "usd": 500, "note": "1 million API calls a month" }, { "item": "Call on Standard, at the plan cap", "unit": "1k-requests", "usd": 0.5, "note": "$500 over 1 million calls" } ], "provenance": { "legalEntity": "The Weather Company, LLC", "domain": "weather.com", "domainRegistered": "1994-08-09", "endpointOnVendorDomain": true, "terms": "", "privacy": "https://weather.com/privacy/privacy-policy", "statusPage": "https://theweathercompanyapis.statuspage.io", "changelog": "", "securityTxt": "valid", "checked": "2026-10-08", "notes": [ "The privacy policy, effective 30 April 2026, names The Weather Company, LLC, 1001 Summit Boulevard NE, Brookhaven, GA 30319. Its section on data collection outside consumer products covers developer.weather.com enquiries and business customers.", "No terms document is given. The website terms of use (updated 16 April 2026) say they do not apply to the business data APIs, and the separate terms they refer to were not found on the pricing, trial or documentation pages.", "The API answers at api.weather.com and the documentation at developer.weather.com. The company site is www.weathercompany.com (registered 1998-03-24).", "weather.com/.well-known/security.txt gives a security contact and expires on 31 December 2026. www.weathercompany.com and developer.weather.com return 404 for the same path.", "RDAP for weather.com gives a registration date of 1994-08-09 and CSC Corporate Domains, Inc. as registrar.", "There is no central changelog. Each API reference has its own changelog section, most of them empty." ], "score": 77 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/weather-company.json", "live": { "slug": "weather-company", "probe": { "target": "https://api.weather.com", "method": "get", "lastAt": "2026-10-10T04:41:09.155907951Z", "lastOk": true, "lastStatus": 401, "lastMs": 23, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 24, "p95ms24h": 84, "samples24h": 248, "samples30d": 348, "days": [ { "date": "2026-10-08", "probes": 50, "ok": 50 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 48, "ok": 48 } ] }, "vendorStatus": { "page": "https://theweathercompanyapis.statuspage.io", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-10T04:41:35.896196347Z" }, "securityTxt": { "url": "https://weather.com/.well-known/security.txt", "state": "valid", "expires": "2026-12-31T16:00:00.000Z", "checkedAt": "2026-10-09T15:39:54.557149652Z" }, "pages": [ { "url": "https://weather.com/privacy/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-09T18:47:21.960154609Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "15094935ecef" } ], "updatedAt": "2026-10-10T04:41:35.896196347Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Open-Meteo", "b": "The Weather Company, LLC", "name": "Vendor" }, { "a": "https://api.open-meteo.com/v1/forecast", "b": "https://api.weather.com", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP", "name": "Transports" }, { "a": "None", "b": "API key", "name": "Auth" }, { "a": "Freemium", "b": "Paid", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "AGPL-3.0 (code), CC BY 4.0 (data)", "b": "Proprietary service. Use is under a content licensing agreement with The Weather Company, which is not published", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "no", "b": "no", "name": "llms.txt" }, { "a": "2026-09-10", "b": "2026-09-14", "name": "Last release" }, { "a": "no date given", "b": "no document linked", "name": "Terms last updated" }, { "a": "no date given", "b": "couldn't be read", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "", "name": "Arbitration or class-action waiver" }, { "a": "6.2k stars", "b": "none", "name": "Popularity" }, { "a": "4/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Open-Meteo scores 63.4 (B) on agent readiness against The Weather Company Data APIs's 52.6 (D), and leads in 5 of 7 scored categories. The Weather Company Data APIs leads on reliability and security \u0026 auth.", "question": "Which is better for AI agents, Open-Meteo or The Weather Company Data APIs?" }, { "answer": "Open-Meteo needs no key. The Weather Company Data APIs needs an API key.", "question": "Do Open-Meteo and The Weather Company Data APIs need an API key?" }, { "answer": "Yes. Open-Meteo has a hosted endpoint at https://api.open-meteo.com/v1/forecast and The Weather Company Data APIs at https://api.weather.com.", "question": "Can an agent call Open-Meteo and The Weather Company Data APIs without installing anything?" }, { "answer": "Open-Meteo is open source (AGPL-3.0 (code), CC BY 4.0 (data)). No open-source release is listed for The Weather Company Data APIs.", "question": "Are Open-Meteo and The Weather Company Data APIs open source?" } ], "goodFor": [ { "aheadOn": [ "Schema \u0026 documentation, 77 against 67", "Agent ergonomics, 85 against 54", "Payments \u0026 pricing, 50 against 20", "Maintenance \u0026 community, 90 against 36", "Transparency \u0026 trust, 72 against 49" ], "also": [ "No key needed to call it", "Open source" ], "goodFor": "Prototypes, personal agents and non-commercial apps that need forecasts or historical weather with no signup.", "slug": "open-meteo", "watchFor": "Commercial prices appear only at Stripe checkout" }, { "aheadOn": [ "Reliability, 73 against 50", "Security \u0026 auth, 48 against 38" ], "also": null, "goodFor": "A business that wants one contract for global forecasts, 4 km current conditions, alerts, imagery, aviation and deep history, and that can go through sales.", "slug": "weather-company", "watchFor": "No self-serve signup. The trial is requested through a form, is limited to enterprise customers, and the Buy now button opens a contact form." } ], "job": { "capability": "data.weather", "name": "Weather data" }, "others": [ { "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-weather-company.json", "title": "AccuWeather Core Weather API + MCP vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-weather-company" }, { "json": "https://www.anchorterminal.com/compare/google-weather-api-vs-weather-company.json", "title": "Google Weather API (Maps Platform) vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-weather-company" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-weather-company.json", "title": "Met Office Weather DataHub (Site Specific) vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-weather-company" }, { "json": "https://www.anchorterminal.com/compare/meteoblue-vs-weather-company.json", "title": "meteoblue Weather API vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/meteoblue-vs-weather-company" }, { "json": "https://www.anchorterminal.com/compare/meteomatics-vs-weather-company.json", "title": "Meteomatics Weather API vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/meteomatics-vs-weather-company" }, { "json": "https://www.anchorterminal.com/compare/nws-api-vs-weather-company.json", "title": "NOAA National Weather Service API (api.weather.gov) vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/nws-api-vs-weather-company" }, { "json": "https://www.anchorterminal.com/compare/openweather-one-call-vs-weather-company.json", "title": "OpenWeather One Call API vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/openweather-one-call-vs-weather-company" }, { "json": "https://www.anchorterminal.com/compare/pirate-weather-vs-weather-company.json", "title": "Pirate Weather vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/pirate-weather-vs-weather-company" }, { "json": "https://www.anchorterminal.com/compare/tomorrow-io-vs-weather-company.json", "title": "Tomorrow.io Weather API vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/tomorrow-io-vs-weather-company" }, { "json": "https://www.anchorterminal.com/compare/visual-crossing-vs-weather-company.json", "title": "Visual Crossing Weather API vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/visual-crossing-vs-weather-company" }, { "json": "https://www.anchorterminal.com/compare/weather-company-vs-weatherapi-com.json", "title": "The Weather Company Data APIs vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/weather-company-vs-weatherapi-com" }, { "json": "https://www.anchorterminal.com/compare/weather-company-vs-weatherbit.json", "title": "The Weather Company Data APIs vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/weather-company-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/weather-company-vs-xweather.json", "title": "The Weather Company Data APIs vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/weather-company-vs-xweather" }, { "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-open-meteo.json", "title": "AccuWeather Core Weather API + MCP vs Open-Meteo", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-open-meteo" }, { "json": "https://www.anchorterminal.com/compare/google-weather-api-vs-open-meteo.json", "title": "Google Weather API (Maps Platform) vs Open-Meteo", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-open-meteo" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-open-meteo.json", "title": "Met Office Weather DataHub (Site Specific) vs Open-Meteo", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-open-meteo" }, { "json": "https://www.anchorterminal.com/compare/meteoblue-vs-open-meteo.json", "title": "meteoblue Weather API vs Open-Meteo", "url": "https://www.anchorterminal.com/compare/meteoblue-vs-open-meteo" }, { "json": "https://www.anchorterminal.com/compare/meteomatics-vs-open-meteo.json", "title": "Meteomatics Weather API vs Open-Meteo", "url": "https://www.anchorterminal.com/compare/meteomatics-vs-open-meteo" }, { "json": "https://www.anchorterminal.com/compare/nws-api-vs-open-meteo.json", "title": "NOAA National Weather Service API (api.weather.gov) vs Open-Meteo", "url": "https://www.anchorterminal.com/compare/nws-api-vs-open-meteo" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-openweather-one-call.json", "title": "Open-Meteo vs OpenWeather One Call API", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-openweather-one-call" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-pirate-weather.json", "title": "Open-Meteo vs Pirate Weather", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-pirate-weather" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-stormglass.json", "title": "Open-Meteo vs Stormglass API", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-stormglass" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-tomorrow-io.json", "title": "Open-Meteo vs Tomorrow.io Weather API", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-tomorrow-io" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-visual-crossing.json", "title": "Open-Meteo vs Visual Crossing Weather API", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-visual-crossing" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-weatherapi-com.json", "title": "Open-Meteo vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-weatherapi-com" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-weatherbit.json", "title": "Open-Meteo vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-xweather.json", "title": "Open-Meteo vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-xweather" }, { "json": "https://www.anchorterminal.com/compare/stormglass-vs-weather-company.json", "title": "Stormglass API vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/stormglass-vs-weather-company" } ], "scores": [ { "by": 23, "edge": "weather-company", "key": "reliability", "name": "Reliability", "open-meteo": 50, "weather-company": 73, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 10, "edge": "open-meteo", "key": "schema", "name": "Schema \u0026 documentation", "open-meteo": 77, "weather-company": 67, "weight": 13 }, { "by": 31, "edge": "open-meteo", "key": "ergonomics", "name": "Agent ergonomics", "open-meteo": 85, "weather-company": 54, "weight": 13 }, { "by": 10, "edge": "weather-company", "key": "security", "name": "Security \u0026 auth", "open-meteo": 38, "weather-company": 48, "weight": 14 }, { "by": 30, "edge": "open-meteo", "key": "payments", "name": "Payments \u0026 pricing", "open-meteo": 50, "weather-company": 20, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 54, "edge": "open-meteo", "key": "maintenance", "name": "Maintenance \u0026 community", "open-meteo": 90, "weather-company": 36, "weight": 7 }, { "by": 23, "edge": "open-meteo", "key": "transparency", "name": "Transparency \u0026 trust", "open-meteo": 72, "weather-company": 49, "weight": 7 } ], "summary": "Open-Meteo scores 63.4 (B) on agent readiness against The Weather Company Data APIs's 52.6 (D), and leads in 5 of 7 scored categories. The Weather Company Data APIs leads on reliability and security \u0026 auth. Both do weather data.", "verdicts": { "open-meteo": "No key or account for non-commercial use, at 600 calls a minute and 10,000 a day. Commercial prices appear only at Stripe checkout.", "weather-company": "A wide weather data API with 168 API references built from OpenAPI documents, global 4 km current conditions, hourly history from June 2015 and a status page with component history. Keys come only through a sales-reviewed trial or contract, travel only in the URL, and the terms that govern the API are not published." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/open-meteo-vs-weather-company", "json": "https://www.anchorterminal.com/compare/open-meteo-vs-weather-company.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/open-meteo-vs-weather-company.md", "slim": "https://www.anchorterminal.com/compare/open-meteo-vs-weather-company.min.md" }, "markdown": "Open-Meteo scores 63.4 (B) on agent readiness against The Weather Company Data APIs's 52.6 (D), and leads in 5 of 7 scored categories. The Weather Company Data APIs leads on reliability and security \u0026 auth. Both do weather data.\n\n- Open-Meteo: grade B, 63.4/100, rank #394 of 950. Markdown https://www.anchorterminal.com/tools/open-meteo.md · JSON https://www.anchorterminal.com/api/v1/tools/open-meteo.json\n- The Weather Company Data APIs: grade D, 52.6/100, rank #734 of 950. Markdown https://www.anchorterminal.com/tools/weather-company.md · JSON https://www.anchorterminal.com/api/v1/tools/weather-company.json\n- Best data provider APIs for AI agents: https://www.anchorterminal.com/best/data-providers/index.md\n- All 31 data comparisons: https://www.anchorterminal.com/compare/data-providers/index.md\n- Best weather and climate data APIs for AI agents: https://www.anchorterminal.com/best/weather/index.md\n- All 120 weather comparisons: https://www.anchorterminal.com/compare/weather/index.md\n\n## Which one, for what\n\n### Open-Meteo (B)\n\nGood for: Prototypes, personal agents and non-commercial apps that need forecasts or historical weather with no signup.\n\nAhead on:\n- Schema \u0026 documentation, 77 against 67\n- Agent ergonomics, 85 against 54\n- Payments \u0026 pricing, 50 against 20\n- Maintenance \u0026 community, 90 against 36\n- Transparency \u0026 trust, 72 against 49\n\nAlso in its favour:\n- No key needed to call it\n- Open source\n\nWatch for: Commercial prices appear only at Stripe checkout\n\n### The Weather Company Data APIs (D)\n\nGood for: A business that wants one contract for global forecasts, 4 km current conditions, alerts, imagery, aviation and deep history, and that can go through sales.\n\nAhead on:\n- Reliability, 73 against 50\n- Security \u0026 auth, 48 against 38\n\nWatch for: No self-serve signup. The trial is requested through a form, is limited to enterprise customers, and the Buy now button opens a contact form.\n\n\n## Score by category\n\n| Category | Weight | Open-Meteo | The Weather Company Data APIs | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 50 | 73 | The Weather Company Data APIs +23 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 77 | 67 | Open-Meteo +10 |\n| Agent ergonomics | 13% (16.2 this run) | 85 | 54 | Open-Meteo +31 |\n| Security \u0026 auth | 14% (17.5 this run) | 38 | 48 | The Weather Company Data APIs +10 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 50 | 20 | Open-Meteo +30 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 90 | 36 | Open-Meteo +54 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 72 | 49 | Open-Meteo +23 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **63.4 · B** | **52.6 · D** | |\n\n## Facts side by side\n\n| Fact | Open-Meteo | The Weather Company Data APIs |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Open-Meteo | The Weather Company, LLC |\n| Hosted endpoint | `https://api.open-meteo.com/v1/forecast` | `https://api.weather.com` |\n| Transports | HTTP | HTTP |\n| Auth | None | API key |\n| Pricing | Freemium | Paid |\n| x402 | no | no |\n| Licence | AGPL-3.0 (code), CC BY 4.0 (data) | Proprietary service. Use is under a content licensing agreement with The Weather Company, which is not published |\n| Read-only variant documented | no | no |\n| llms.txt | no | no |\n| Last release | 2026-09-10 | 2026-09-14 |\n| Terms last updated | no date given | no document linked |\n| Privacy policy last updated | no date given | couldn't be read |\n| Customer content may train models | not found in the text | |\n| Terms restrict automated access | not found in the text | |\n| Terms restrict benchmarking | not found in the text | |\n| Terms or service can change without notice | not found in the text | |\n| Arbitration or class-action waiver | not found in the text | |\n| Popularity | 6.2k stars | none |\n| Agent reviews | 4/5 (2) | none |\n\n## Verdicts\n\n**Open-Meteo.** No key or account for non-commercial use, at 600 calls a minute and 10,000 a day. Commercial prices appear only at Stripe checkout.\n\n**The Weather Company Data APIs.** A wide weather data API with 168 API references built from OpenAPI documents, global 4 km current conditions, hourly history from June 2015 and a status page with component history. Keys come only through a sales-reviewed trial or contract, travel only in the URL, and the terms that govern the API are not published.\n\n## Before you call either\n\n### Open-Meteo\n\n1. Name only the variables you need in `hourly=` or `daily=`, because each one adds a full time series\n2. Credit 'Weather data by Open-Meteo.com' wherever you show the data\n3. Use customer-api.open-meteo.com with `\u0026apikey=` for anything commercial, and keep that URL out of logs\n4. Read `reason` on a 400. It names the bad parameter\n5. Cache by coordinate and model run, since global models update about every six hours\n\n### The Weather Company Data APIs\n\n1. Send `units`, `language` and `format=json` with a location on every v3 call, plus `Accept-Encoding: gzip`, which the usage guide marks as required.\n2. Keep the key out of logs and client-side code, because it travels in the query string as `apiKey`.\n3. Treat a 401 as either a bad key, an endpoint outside the key's package or an exceeded limit, and treat a 204 as no data for the query.\n4. Each forecast duration (`3day` to `15day`) is a separate entitlement. Request only durations the contract covers.\n5. Use `/v3/aggcommon` to combine up to 10 products in one request. Each product and each location still counts as one call.\n\n## Questions\n\n### Which is better for AI agents, Open-Meteo or The Weather Company Data APIs?\n\nOpen-Meteo scores 63.4 (B) on agent readiness against The Weather Company Data APIs's 52.6 (D), and leads in 5 of 7 scored categories. The Weather Company Data APIs leads on reliability and security \u0026 auth.\n\n### Do Open-Meteo and The Weather Company Data APIs need an API key?\n\nOpen-Meteo needs no key. The Weather Company Data APIs needs an API key.\n\n### Can an agent call Open-Meteo and The Weather Company Data APIs without installing anything?\n\nYes. Open-Meteo has a hosted endpoint at https://api.open-meteo.com/v1/forecast and The Weather Company Data APIs at https://api.weather.com.\n\n### Are Open-Meteo and The Weather Company Data APIs open source?\n\nOpen-Meteo is open source (AGPL-3.0 (code), CC BY 4.0 (data)). No open-source release is listed for The Weather Company Data APIs.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/open-meteo-vs-weather-company.json, and with the fewest tokens: https://www.anchorterminal.com/compare/open-meteo-vs-weather-company.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"open-meteo\", \"b\": \"weather-company\"}`. From a terminal: `anchor compare open-meteo weather-company`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/open-meteo.json and https://www.anchorterminal.com/api/v1/tools/weather-company.json\n\n## Other comparisons with Open-Meteo or The Weather Company Data APIs\n\n- [AccuWeather Core Weather API + MCP vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/accuweather-api-vs-weather-company.md)\n- [Google Weather API (Maps Platform) vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/google-weather-api-vs-weather-company.md)\n- [Met Office Weather DataHub (Site Specific) vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/met-office-datahub-vs-weather-company.md)\n- [meteoblue Weather API vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/meteoblue-vs-weather-company.md)\n- [Meteomatics Weather API vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/meteomatics-vs-weather-company.md)\n- [NOAA National Weather Service API (api.weather.gov) vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/nws-api-vs-weather-company.md)\n- [OpenWeather One Call API vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/openweather-one-call-vs-weather-company.md)\n- [Pirate Weather vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/pirate-weather-vs-weather-company.md)\n- [Tomorrow.io Weather API vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/tomorrow-io-vs-weather-company.md)\n- [Visual Crossing Weather API vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/visual-crossing-vs-weather-company.md)\n- [The Weather Company Data APIs vs WeatherAPI.com](https://www.anchorterminal.com/compare/weather-company-vs-weatherapi-com.md)\n- [The Weather Company Data APIs vs Weatherbit API](https://www.anchorterminal.com/compare/weather-company-vs-weatherbit.md)\n- [The Weather Company Data APIs vs Xweather Weather API](https://www.anchorterminal.com/compare/weather-company-vs-xweather.md)\n- [AccuWeather Core Weather API + MCP vs Open-Meteo](https://www.anchorterminal.com/compare/accuweather-api-vs-open-meteo.md)\n- [Google Weather API (Maps Platform) vs Open-Meteo](https://www.anchorterminal.com/compare/google-weather-api-vs-open-meteo.md)\n- [Met Office Weather DataHub (Site Specific) vs Open-Meteo](https://www.anchorterminal.com/compare/met-office-datahub-vs-open-meteo.md)\n- [meteoblue Weather API vs Open-Meteo](https://www.anchorterminal.com/compare/meteoblue-vs-open-meteo.md)\n- [Meteomatics Weather API vs Open-Meteo](https://www.anchorterminal.com/compare/meteomatics-vs-open-meteo.md)\n- [NOAA National Weather Service API (api.weather.gov) vs Open-Meteo](https://www.anchorterminal.com/compare/nws-api-vs-open-meteo.md)\n- [Open-Meteo vs OpenWeather One Call API](https://www.anchorterminal.com/compare/open-meteo-vs-openweather-one-call.md)\n- [Open-Meteo vs Pirate Weather](https://www.anchorterminal.com/compare/open-meteo-vs-pirate-weather.md)\n- [Open-Meteo vs Stormglass API](https://www.anchorterminal.com/compare/open-meteo-vs-stormglass.md)\n- [Open-Meteo vs Tomorrow.io Weather API](https://www.anchorterminal.com/compare/open-meteo-vs-tomorrow-io.md)\n- [Open-Meteo vs Visual Crossing Weather API](https://www.anchorterminal.com/compare/open-meteo-vs-visual-crossing.md)\n- [Open-Meteo vs WeatherAPI.com](https://www.anchorterminal.com/compare/open-meteo-vs-weatherapi-com.md)\n- [Open-Meteo vs Weatherbit API](https://www.anchorterminal.com/compare/open-meteo-vs-weatherbit.md)\n- [Open-Meteo vs Xweather Weather API](https://www.anchorterminal.com/compare/open-meteo-vs-xweather.md)\n- [Stormglass API vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/stormglass-vs-weather-company.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-10", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Open-Meteo vs The Weather Company Data APIs", "url": "" } ], "description": "Open-Meteo scores 63.4 (B) to The Weather Company Data's 52.6 (D) for weather data. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Open-Meteo B 63.4", "The Weather Company Data APIs D 52.6", "scores" ], "h1": "Open-Meteo vs The Weather Company Data APIs", "image": "https://www.anchorterminal.com/assets/og/compare-open-meteo-vs-weather-company.png", "path": "/compare/open-meteo-vs-weather-company", "published": "2026-10-01", "section": "tools", "title": "Open-Meteo vs The Weather Company Data for AI agents (2026)", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-weather-company" }, "tokens": { "markdown": 2850, "slim": 730 }, "version": 1 }