{ "data": { "a": { "slug": "tomorrow-io", "name": "Tomorrow.io Weather API", "vendor": "The Tomorrow Companies Inc.", "vendorUrl": "https://www.tomorrow.io", "kind": "http-api", "category": "weather", "summary": "Tomorrow.io's Weather API returns current conditions, forecasts, recent and archived history, map tiles, route weather and alert webhooks for a coordinate, place name or GeoJSON shape. It is a REST API with a hosted MCP server.", "url": "https://www.anchorterminal.com/tools/tomorrow-io", "markdownUrl": "https://www.anchorterminal.com/tools/tomorrow-io.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/tomorrow-io.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/tomorrow-io.json", "license": "Proprietary service under Tomorrow.io's subscription terms", "transports": [ "http" ], "remoteUrl": "https://api.tomorrow.io/v4", "packages": [], "auth": "mixed", "authNotes": "A person signs up in a browser and copies the key from the dashboard. The key goes in an `apikey` header or query parameter on REST calls and in `X-Api-Key` for the MCP server. The docs say keys carry full privileges, and more keys are created by an account manager. The MCP endpoint also advertises OAuth with dynamic client registration, PKCE and one scope, `mcp:read`.", "pricing": "freemium", "pricingNotes": "Free plan with no published price for anything above it. Free covers core data layers, a 5-day forecast, 24 hours of history, one monitored location and one alert, and the terms bar commercial use on self-generated accounts. Enterprise is by quote and adds the 14-day forecast, premium layers, routes, maps and the historical archive, which is metered in tokens with no public token price (https://www.tomorrow.io/weather-api/, checked 2026-10-08).", "priceSummary": "Freemium", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs, the OpenAPI file or the plan table (checked 2026-10-08).", "endpoints": [] }, "toolCount": 11, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://docs.tomorrow.io/reference/welcome", "llmsTxt": "https://docs.tomorrow.io/llms.txt", "openapi": "https://docs.tomorrow.io/openapi/tomorrowio-api.json", "capabilities": [ "weather.current", "weather.forecast", "weather.historical", "weather.alerts", "weather.marine", "data.weather" ], "tags": [ "hosted", "freemium", "free-tier", "closed-source", "openapi", "llms-txt", "mcp", "webhooks", "status-page", "sales-led", "us" ], "lastRelease": "2026-07-14", "graded": true, "anchor": { "graded": true, "score": 51.4, "grade": "D", "agentReady": false, "rank": 578, "ranked": true, "rankOf": 722, "categoryRank": 10, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 73, "maintenance": 27, "payments": 20, "reliability": 55, "schema": 75, "security": 34, "transparency": 63 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "A public OpenAPI 3.1 file, Markdown docs with llms.txt and a hosted MCP server with 11 tools suit agents, and a free plan exists. Paid prices are by quote only, free keys are barred from commercial use, the docs give no numeric rate limits, and the status page lists 50 incidents in 85 days, mostly stale or degraded data.", "bestFor": "Teams that need minute-level and route or polygon forecasts, alert webhooks and a hosted MCP server, and will buy through sales.", "strengths": [ "Public OpenAPI 3.1.0 file (version 4.0.1, 31 paths, 39 operations), plus llms.txt and a Markdown copy of every docs page", "Hosted MCP server at api.tomorrow.io/v4/tomorrow-weather/mcp with 11 documented tools, added in April 2026", "The `fields`, `timesteps`, `startTime` and `endTime` parameters size a Timelines response to what the task needs", "Six-digit error codes that the docs say stay fixed, and soft warnings returned beside partial data", "Alert webhooks signed with HMAC-SHA256 in an `X-Signature` header, retried up to two times" ], "weaknesses": [ "No public price for paid use. The plan table lists Free and Enterprise, the second by quote", "The subscription terms bar commercial use on self-generated accounts and forbid storing unaltered data without an order", "No numeric rate limits in the reviewed docs, and remaining-limit headers are documented for Enterprise accounts only", "Keys carry full privileges and may be sent as an `apikey` query parameter. More keys come through an account manager", "50 incidents on the status page between 15 July and 2 October 2026, 25 naming the Timeline or Historical API", "No official SDK, no security.txt, and no certification or disclosure policy found on the pages read" ], "agentNotes": [ "Send the key in the `apikey` header, not the query string, so it stays out of URLs and logs", "Request only the `fields` and `timesteps` needed on POST /timelines. Free plans cover 24 hours back and 5 days ahead at `1h` and `1d`", "Split archive requests. POST /historical takes at most 31 days per call and deducts tokens, 1 for a point and 10 for a polygon", "Treat 401 with code 401001 as a missing or bad key. The docs say 403, the live API answered 401 on 8 October 2026", "On 429 back off without a hint. `Retry-After` is documented only for 503", "Check the plan's terms before storing or reselling responses. Free accounts are limited to non-commercial use with a Powered by Tomorrow.io link" ], "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": 51.4 } ], "editorialScores": { "ergonomics": 73, "maintenance": 27, "payments": 20, "reliability": 55, "schema": 75, "security": 34, "transparency": 42 }, "provenanceScore": 84 }, "connect": { "http": "curl --request GET --url 'https://api.tomorrow.io/v4/weather/realtime?location=42.3478,-71.0466' --header 'apikey: API_KEY'", "config": { "mcpServers": { "tomorrow-weather-mcp": { "headers": { "X-Api-Key": "${TOMORROW_API_KEY}" }, "type": "http", "url": "https://api.tomorrow.io/v4/tomorrow-weather/mcp" } } } }, "letme": { "capability": "https://letme.dev/weather.current", "tool": "https://letme.dev/tomorrow-io" }, "area": "domain-data", "provenance": { "legalEntity": "The Tomorrow Companies Inc.", "domain": "tomorrow.io", "domainRegistered": "2012-02-15", "endpointOnVendorDomain": true, "terms": "https://www.tomorrow.io/legal/terms-of-service/", "privacy": "https://www.tomorrow.io/legal/product-privacy-policy/", "statusPage": "https://status.tomorrow.io", "changelog": "https://docs.tomorrow.io/reference/release-notes", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The subscription terms (last updated 19 October 2023) name The Tomorrow Companies Inc., a Delaware corporation with its principal place of business in Boston, Massachusetts, and cover the API, the dashboard and the data portal.", "The product privacy policy (last updated 17 December 2024) covers the API and platform and names Tomorrow.io Inc. as operator. The website has a separate privacy policy and terms of use, which we did not use here.", "The API and the MCP server answer at api.tomorrow.io.", "www.tomorrow.io, tomorrow.io and api.tomorrow.io each return 404 for /.well-known/security.txt.", "RDAP gives a registration date of 2012-02-15 for tomorrow.io. The status page runs on Atlassian Statuspage." ], "score": 84 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/tomorrow-io.json", "live": { "slug": "tomorrow-io", "probe": { "target": "https://api.tomorrow.io/v4", "method": "get", "lastAt": "2026-10-08T19:53:04.294618549Z", "lastOk": true, "lastStatus": 404, "lastMs": 149, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 152, "p95ms24h": 185, "samples24h": 27, "samples30d": 27, "days": [ { "date": "2026-10-08", "probes": 27, "ok": 27 } ] }, "vendorStatus": { "page": "https://status.tomorrow.io", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-08T19:51:05.559323966Z" }, "pages": [ { "url": "https://docs.tomorrow.io/reference/release-notes", "kind": "changelog", "status": 200, "checkedAt": "2026-10-08T18:19:37.617241436Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "5c08804d147f" }, { "url": "https://www.tomorrow.io/legal/product-privacy-policy/", "kind": "privacy", "status": 0, "checkedAt": "2026-10-08T18:31:01.004304542Z", "changedAt": "0001-01-01T00:00:00Z", "blockedByRobots": true }, { "url": "https://www.tomorrow.io/legal/terms-of-service/", "kind": "terms", "status": 0, "checkedAt": "2026-10-08T18:31:01.446636319Z", "changedAt": "0001-01-01T00:00:00Z", "blockedByRobots": true } ], "updatedAt": "2026-10-08T19:53:04.294618549Z" } }, "answer": "Weatherbit API scores 57.7 (C) on agent readiness against Tomorrow.io Weather API's 51.4 (D), and leads in 3 of 7 scored categories. Tomorrow.io Weather API leads on agent ergonomics and maintenance \u0026 community.", "b": { "slug": "weatherbit", "name": "Weatherbit API", "vendor": "Weatherbit LLC", "vendorUrl": "https://www.weatherbit.io", "kind": "http-api", "category": "weather", "summary": "Weather data API from Weatherbit LLC of North Carolina. It returns current conditions, daily, hourly and minutely forecasts, severe weather alerts, historical weather, air quality and agricultural and energy datasets by coordinates, over HTTPS with an API key.", "url": "https://www.anchorterminal.com/tools/weatherbit", "markdownUrl": "https://www.anchorterminal.com/tools/weatherbit.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/weatherbit.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/weatherbit.json", "repo": "https://github.com/weatherbit/weatherbit-python", "license": "Proprietary service under Weatherbit's terms of service. The free plan's data is under a Creative Commons non-commercial licence. The Python SDK is MIT", "transports": [ "http" ], "remoteUrl": "https://api.weatherbit.io/v2.0", "packages": [ { "registry": "pypi", "name": "pyweatherbit" } ], "auth": "api-key", "authNotes": "Self-serve key from a browser signup. The key goes in the `key` query parameter on every request, and no header option is documented. Free, Standard and Plus accounts have one key. Business has up to 10.", "pricing": "freemium", "pricingNotes": "Free plan at 50 requests a day for non-commercial use, and a 21-day Business trial with no card and up to 1,500 requests a day. Paid plans are monthly subscriptions with daily quotas and no overage price. The pricing page showed us pounds only, Standard £40, Plus £179 and Business £410 a month, Enterprise from £820. Billing can be in USD, EUR or GBP, and we did not see the dollar prices (https://www.weatherbit.io/pricing, checked 2026-10-08).", "priceSummary": "Freemium", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the API docs, the Swagger spec or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": 78, "asOf": "2026-10-08" }, "docsUrl": "https://www.weatherbit.io/api", "openapi": "https://www.weatherbit.io/static/swagger.json", "capabilities": [ "weather.current", "weather.forecast", "weather.alerts", "weather.historical", "data.weather" ], "tags": [ "hosted", "freemium", "free-tier", "no-card", "closed-source", "openapi", "python", "status-page", "us" ], "lastRelease": "2025-08-01", "graded": true, "anchor": { "graded": true, "score": 57.7, "grade": "C", "agentReady": false, "rank": 466, "ranked": true, "rankOf": 722, "categoryRank": 7, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 61, "maintenance": 21, "payments": 30, "reliability": 91, "schema": 72, "security": 39, "transparency": 63 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "A read-only weather API with a Swagger 2.0 spec, quota headers on every response and a status page showing 100 per cent on three API monitors over 90 days. The key travels only in the query string, the free plan allows 50 requests a day for non-commercial use, and the last dated API announcement is 1 August 2025.", "bestFor": "An application that needs forecasts plus specialised datasets (air quality, lightning, soil and degree days) from one paid subscription, queried by coordinates.", "strengths": [ "Status page with three API monitors, each at 100 per cent over the 90 days to 8 October 2026", "Swagger 2.0 spec at /static/swagger.json with 21 GET endpoints, typed response models and 400, 403, 429 and 500 bodies", "Every response carries X-RateLimit-Limit, X-RateLimit-Remaining and X-RateLimit-Reset, and /subscription/usage returns the same counters", "Daily and per-second limits published for every plan, from 50 a day on Free to 2 million a day on Business", "The privacy policy states that API request logs are kept for no more than two weeks" ], "weaknesses": [ "The key is accepted only as the `key` query parameter, and the spec lists plain http as a scheme", "Free plan is 50 requests a day, non-commercial, with a 7-day daily forecast and no hourly forecast or history", "The last dated API announcement on the blog is 1 August 2025, and the Python SDK was last released in February 2024", "No security.txt, disclosure policy, certification or DPA found on the site", "The terms let Weatherbit end access at any time without notice or reason, and no deprecation policy was found" ], "agentNotes": [ "Pass lat and lon. City, postal code and station lookups are accepted, but the docs recommend coordinates and mark station ID as use with caution", "Read X-RateLimit-Remaining and X-RateLimit-Reset on each response. Daily quotas reset at 00:00 UTC and a spent quota returns 429 until then", "Treat HTTP 204 with an empty body as no data found, not as an error", "Split historical requests into ranges of one month or less. History needs the Plus plan or higher and has its own daily quota", "Keep the key out of logs. It is part of the URL on every call, so always use https://api.weatherbit.io/v2.0" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 57.7 } ], "editorialScores": { "ergonomics": 61, "maintenance": 21, "payments": 30, "reliability": 91, "schema": 72, "security": 39, "transparency": 42 }, "provenanceScore": 84 }, "connect": { "install": "pip install pyweatherbit", "http": "curl -s \"https://api.weatherbit.io/v2.0/forecast/daily?days=16\u0026key=API_KEY\u0026lat=35.7796\u0026lon=-78.6382\"" }, "letme": { "capability": "https://letme.dev/weather.current", "tool": "https://letme.dev/weatherbit" }, "area": "domain-data", "provenance": { "legalEntity": "Weatherbit LLC", "domain": "weatherbit.io", "domainRegistered": "2016-12-25", "endpointOnVendorDomain": true, "terms": "https://www.weatherbit.io/terms", "privacy": "https://www.weatherbit.io/privacy", "statusPage": "https://status.weatherbit.io", "changelog": "https://blog.weatherbit.io/tag/news/", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The terms (updated 1 May 2025) cover the Weatherbit API and the website in one document and name Weatherbit LLC, 921 Town Centre Blvd #1129, Clayton, NC 27520, under North Carolina law.", "The privacy policy (updated 26 December 2023) covers the site and the API, and says hosting is in the United States and Canada. The help centre says the API runs in North America and Europe, and our unauthenticated call answered with an api_region: EU header.", "www.weatherbit.io/.well-known/security.txt returns 404.", "status.weatherbit.io runs on UptimeRobot with three monitors, API Central, East and West.", "The changelog is the news tag of the vendor's blog. Its latest post is dated 1 August 2025.", "RDAP for weatherbit.io gives a registration date of 2016-12-25." ], "score": 84 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/weatherbit.json", "live": { "slug": "weatherbit", "probe": { "target": "https://api.weatherbit.io/v2.0", "method": "get", "lastAt": "2026-10-08T19:53:06.392760015Z", "lastOk": true, "lastStatus": 400, "lastMs": 93, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 95, "p95ms24h": 144, "samples24h": 27, "samples30d": 27, "days": [ { "date": "2026-10-08", "probes": 27, "ok": 27 } ] }, "vendorStatus": { "page": "https://status.weatherbit.io", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-08T19:39:20.126331622Z" }, "pages": [ { "url": "https://blog.weatherbit.io/tag/news/", "kind": "changelog", "status": 200, "checkedAt": "2026-10-08T18:15:50.177777534Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "427edce4e014" }, { "url": "https://www.weatherbit.io/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:31:33.789419573Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "e20e5b8f5c6c" }, { "url": "https://www.weatherbit.io/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-08T18:31:35.93530729Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "05c1785284ba" }, { "url": "https://www.weatherbit.io/terms", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:31:37.876349999Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "5f7fdca11857" } ], "updatedAt": "2026-10-08T19:53:06.392760015Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "The Tomorrow Companies Inc.", "b": "Weatherbit LLC", "name": "Vendor" }, { "a": "https://api.tomorrow.io/v4", "b": "https://api.weatherbit.io/v2.0", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP", "name": "Transports" }, { "a": "OAuth or key", "b": "API key", "name": "Auth" }, { "a": "Freemium", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under Tomorrow.io's subscription terms", "b": "Proprietary service under Weatherbit's terms of service. The free plan's data is under a Creative Commons non-commercial licence. The Python SDK is MIT", "name": "Licence" }, { "a": "11", "b": "none", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "no", "name": "llms.txt" }, { "a": "2026-07-14", "b": "2025-08-01", "name": "Last release" }, { "a": "couldn't be read", "b": "2025-05-01", "name": "Terms last updated" }, { "a": "couldn't be read", "b": "2023-12-26", "name": "Privacy policy last updated" }, { "a": "couldn't be read", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "couldn't be read", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "couldn't be read", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "couldn't be read", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "couldn't be read", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "78 PyPI/wk", "name": "Popularity" } ], "faq": [ { "answer": "Weatherbit API scores 57.7 (C) on agent readiness against Tomorrow.io Weather API's 51.4 (D), and leads in 3 of 7 scored categories. Tomorrow.io Weather API leads on agent ergonomics and maintenance \u0026 community.", "question": "Which is better for AI agents, Tomorrow.io Weather API or Weatherbit API?" }, { "answer": "Tomorrow.io Weather API takes an API key or an OAuth sign-in. Weatherbit API needs an API key.", "question": "Do Tomorrow.io Weather API and Weatherbit API need an API key?" }, { "answer": "Yes. Tomorrow.io Weather API has a hosted endpoint at https://api.tomorrow.io/v4 and Weatherbit API at https://api.weatherbit.io/v2.0.", "question": "Can an agent call Tomorrow.io Weather API and Weatherbit API without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Agent ergonomics, 73 against 61", "Maintenance \u0026 community, 27 against 21" ], "also": null, "goodFor": "Teams that need minute-level and route or polygon forecasts, alert webhooks and a hosted MCP server, and will buy through sales.", "slug": "tomorrow-io", "watchFor": "No public price for paid use. The plan table lists Free and Enterprise, the second by quote" }, { "aheadOn": [ "Reliability, 91 against 55", "Security \u0026 auth, 39 against 34", "Payments \u0026 pricing, 30 against 20" ], "also": [ "Free to start without a card" ], "goodFor": "An application that needs forecasts plus specialised datasets (air quality, lightning, soil and degree days) from one paid subscription, queried by coordinates.", "slug": "weatherbit", "watchFor": "The key is accepted only as the `key` query parameter, and the spec lists plain http as a scheme" } ], "job": { "capability": "weather.current", "name": "Weather current" }, "others": [ { "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-tomorrow-io.json", "title": "AccuWeather Core Weather API + MCP vs Tomorrow.io Weather API", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-tomorrow-io" }, { "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-weatherbit.json", "title": "AccuWeather Core Weather API + MCP vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/google-weather-api-vs-tomorrow-io.json", "title": "Google Weather API (Maps Platform) vs Tomorrow.io Weather API", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-tomorrow-io" }, { "json": "https://www.anchorterminal.com/compare/google-weather-api-vs-weatherbit.json", "title": "Google Weather API (Maps Platform) vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-tomorrow-io.json", "title": "Met Office Weather DataHub (Site Specific) vs Tomorrow.io Weather API", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-tomorrow-io" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-weatherbit.json", "title": "Met Office Weather DataHub (Site Specific) vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/meteoblue-vs-tomorrow-io.json", "title": "meteoblue Weather API vs Tomorrow.io Weather API", "url": "https://www.anchorterminal.com/compare/meteoblue-vs-tomorrow-io" }, { "json": "https://www.anchorterminal.com/compare/meteoblue-vs-weatherbit.json", "title": "meteoblue Weather API vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/meteoblue-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/meteomatics-vs-tomorrow-io.json", "title": "Meteomatics Weather API vs Tomorrow.io Weather API", "url": "https://www.anchorterminal.com/compare/meteomatics-vs-tomorrow-io" }, { "json": "https://www.anchorterminal.com/compare/meteomatics-vs-weatherbit.json", "title": "Meteomatics Weather API vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/meteomatics-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/nws-api-vs-tomorrow-io.json", "title": "NOAA National Weather Service API (api.weather.gov) vs Tomorrow.io Weather API", "url": "https://www.anchorterminal.com/compare/nws-api-vs-tomorrow-io" }, { "json": "https://www.anchorterminal.com/compare/nws-api-vs-weatherbit.json", "title": "NOAA National Weather Service API (api.weather.gov) vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/nws-api-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/openweather-one-call-vs-tomorrow-io.json", "title": "OpenWeather One Call API vs Tomorrow.io Weather API", "url": "https://www.anchorterminal.com/compare/openweather-one-call-vs-tomorrow-io" }, { "json": "https://www.anchorterminal.com/compare/openweather-one-call-vs-weatherbit.json", "title": "OpenWeather One Call API vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/openweather-one-call-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/pirate-weather-vs-tomorrow-io.json", "title": "Pirate Weather vs Tomorrow.io Weather API", "url": "https://www.anchorterminal.com/compare/pirate-weather-vs-tomorrow-io" }, { "json": "https://www.anchorterminal.com/compare/pirate-weather-vs-weatherbit.json", "title": "Pirate Weather vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/pirate-weather-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/tomorrow-io-vs-visual-crossing.json", "title": "Tomorrow.io Weather API vs Visual Crossing Weather API", "url": "https://www.anchorterminal.com/compare/tomorrow-io-vs-visual-crossing" }, { "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/tomorrow-io-vs-weatherapi-com.json", "title": "Tomorrow.io Weather API vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/tomorrow-io-vs-weatherapi-com" }, { "json": "https://www.anchorterminal.com/compare/tomorrow-io-vs-xweather.json", "title": "Tomorrow.io Weather API vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/tomorrow-io-vs-xweather" }, { "json": "https://www.anchorterminal.com/compare/visual-crossing-vs-weatherbit.json", "title": "Visual Crossing Weather API vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/visual-crossing-vs-weatherbit" }, { "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/weatherapi-com-vs-weatherbit.json", "title": "WeatherAPI.com vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/weatherapi-com-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/weatherbit-vs-xweather.json", "title": "Weatherbit API vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/weatherbit-vs-xweather" } ], "scores": [ { "by": 36, "edge": "weatherbit", "key": "reliability", "name": "Reliability", "tomorrow-io": 55, "weatherbit": 91, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 3, "edge": "tomorrow-io", "key": "schema", "name": "Schema \u0026 documentation", "tomorrow-io": 75, "weatherbit": 72, "weight": 13 }, { "by": 12, "edge": "tomorrow-io", "key": "ergonomics", "name": "Agent ergonomics", "tomorrow-io": 73, "weatherbit": 61, "weight": 13 }, { "by": 5, "edge": "weatherbit", "key": "security", "name": "Security \u0026 auth", "tomorrow-io": 34, "weatherbit": 39, "weight": 14 }, { "by": 10, "edge": "weatherbit", "key": "payments", "name": "Payments \u0026 pricing", "tomorrow-io": 20, "weatherbit": 30, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 6, "edge": "tomorrow-io", "key": "maintenance", "name": "Maintenance \u0026 community", "tomorrow-io": 27, "weatherbit": 21, "weight": 7 }, { "by": 0, "edge": "", "key": "transparency", "name": "Transparency \u0026 trust", "tomorrow-io": 63, "weatherbit": 63, "weight": 7 } ], "summary": "Weatherbit API scores 57.7 (C) on agent readiness against Tomorrow.io Weather API's 51.4 (D), and leads in 3 of 7 scored categories. Tomorrow.io Weather API leads on agent ergonomics and maintenance \u0026 community. Both do weather current.", "verdicts": { "tomorrow-io": "A public OpenAPI 3.1 file, Markdown docs with llms.txt and a hosted MCP server with 11 tools suit agents, and a free plan exists. Paid prices are by quote only, free keys are barred from commercial use, the docs give no numeric rate limits, and the status page lists 50 incidents in 85 days, mostly stale or degraded data.", "weatherbit": "A read-only weather API with a Swagger 2.0 spec, quota headers on every response and a status page showing 100 per cent on three API monitors over 90 days. The key travels only in the query string, the free plan allows 50 requests a day for non-commercial use, and the last dated API announcement is 1 August 2025." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/tomorrow-io-vs-weatherbit", "json": "https://www.anchorterminal.com/compare/tomorrow-io-vs-weatherbit.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/tomorrow-io-vs-weatherbit.md", "slim": "https://www.anchorterminal.com/compare/tomorrow-io-vs-weatherbit.min.md" }, "markdown": "Weatherbit API scores 57.7 (C) on agent readiness against Tomorrow.io Weather API's 51.4 (D), and leads in 3 of 7 scored categories. Tomorrow.io Weather API leads on agent ergonomics and maintenance \u0026 community. Both do weather current.\n\n- Tomorrow.io Weather API: grade D, 51.4/100, rank #578 of 722. Markdown https://www.anchorterminal.com/tools/tomorrow-io.md · JSON https://www.anchorterminal.com/api/v1/tools/tomorrow-io.json\n- Weatherbit API: grade C, 57.7/100, rank #466 of 722. Markdown https://www.anchorterminal.com/tools/weatherbit.md · JSON https://www.anchorterminal.com/api/v1/tools/weatherbit.json\n\n## Which one, for what\n\n### Tomorrow.io Weather API (D)\n\nGood for: Teams that need minute-level and route or polygon forecasts, alert webhooks and a hosted MCP server, and will buy through sales.\n\nAhead on:\n- Agent ergonomics, 73 against 61\n- Maintenance \u0026 community, 27 against 21\n\nWatch for: No public price for paid use. The plan table lists Free and Enterprise, the second by quote\n\n### Weatherbit API (C)\n\nGood for: An application that needs forecasts plus specialised datasets (air quality, lightning, soil and degree days) from one paid subscription, queried by coordinates.\n\nAhead on:\n- Reliability, 91 against 55\n- Security \u0026 auth, 39 against 34\n- Payments \u0026 pricing, 30 against 20\n\nAlso in its favour:\n- Free to start without a card\n\nWatch for: The key is accepted only as the `key` query parameter, and the spec lists plain http as a scheme\n\n\n## Score by category\n\n| Category | Weight | Tomorrow.io Weather API | Weatherbit API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 55 | 91 | Weatherbit API +36 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 75 | 72 | Tomorrow.io Weather API +3 |\n| Agent ergonomics | 13% (16.2 this run) | 73 | 61 | Tomorrow.io Weather API +12 |\n| Security \u0026 auth | 14% (17.5 this run) | 34 | 39 | Weatherbit API +5 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 30 | Weatherbit API +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 27 | 21 | Tomorrow.io Weather API +6 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 63 | 63 | even |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **51.4 · D** | **57.7 · C** | |\n\n## Facts side by side\n\n| Fact | Tomorrow.io Weather API | Weatherbit API |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | The Tomorrow Companies Inc. | Weatherbit LLC |\n| Hosted endpoint | `https://api.tomorrow.io/v4` | `https://api.weatherbit.io/v2.0` |\n| Transports | HTTP | HTTP |\n| Auth | OAuth or key | API key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | Proprietary service under Tomorrow.io's subscription terms | Proprietary service under Weatherbit's terms of service. The free plan's data is under a Creative Commons non-commercial licence. The Python SDK is MIT |\n| Tools exposed | 11 | none |\n| Read-only variant documented | no | no |\n| llms.txt | yes | no |\n| Last release | 2026-07-14 | 2025-08-01 |\n| Terms last updated | couldn't be read | 2025-05-01 |\n| Privacy policy last updated | couldn't be read | 2023-12-26 |\n| Customer content may train models | couldn't be read | not found in the text |\n| Terms restrict automated access | couldn't be read | not found in the text |\n| Terms restrict benchmarking | couldn't be read | not found in the text |\n| Terms or service can change without notice | couldn't be read | not found in the text |\n| Arbitration or class-action waiver | couldn't be read | not found in the text |\n| Popularity | none | 78 PyPI/wk |\n\n## Verdicts\n\n**Tomorrow.io Weather API.** A public OpenAPI 3.1 file, Markdown docs with llms.txt and a hosted MCP server with 11 tools suit agents, and a free plan exists. Paid prices are by quote only, free keys are barred from commercial use, the docs give no numeric rate limits, and the status page lists 50 incidents in 85 days, mostly stale or degraded data.\n\n**Weatherbit API.** A read-only weather API with a Swagger 2.0 spec, quota headers on every response and a status page showing 100 per cent on three API monitors over 90 days. The key travels only in the query string, the free plan allows 50 requests a day for non-commercial use, and the last dated API announcement is 1 August 2025.\n\n## Before you call either\n\n### Tomorrow.io Weather API\n\n1. Send the key in the `apikey` header, not the query string, so it stays out of URLs and logs\n2. Request only the `fields` and `timesteps` needed on POST /timelines. Free plans cover 24 hours back and 5 days ahead at `1h` and `1d`\n3. Split archive requests. POST /historical takes at most 31 days per call and deducts tokens, 1 for a point and 10 for a polygon\n4. Treat 401 with code 401001 as a missing or bad key. The docs say 403, the live API answered 401 on 8 October 2026\n5. On 429 back off without a hint. `Retry-After` is documented only for 503\n6. Check the plan's terms before storing or reselling responses. Free accounts are limited to non-commercial use with a Powered by Tomorrow.io link\n\n### Weatherbit API\n\n1. Pass lat and lon. City, postal code and station lookups are accepted, but the docs recommend coordinates and mark station ID as use with caution\n2. Read X-RateLimit-Remaining and X-RateLimit-Reset on each response. Daily quotas reset at 00:00 UTC and a spent quota returns 429 until then\n3. Treat HTTP 204 with an empty body as no data found, not as an error\n4. Split historical requests into ranges of one month or less. History needs the Plus plan or higher and has its own daily quota\n5. Keep the key out of logs. It is part of the URL on every call, so always use https://api.weatherbit.io/v2.0\n\n## Questions\n\n### Which is better for AI agents, Tomorrow.io Weather API or Weatherbit API?\n\nWeatherbit API scores 57.7 (C) on agent readiness against Tomorrow.io Weather API's 51.4 (D), and leads in 3 of 7 scored categories. Tomorrow.io Weather API leads on agent ergonomics and maintenance \u0026 community.\n\n### Do Tomorrow.io Weather API and Weatherbit API need an API key?\n\nTomorrow.io Weather API takes an API key or an OAuth sign-in. Weatherbit API needs an API key.\n\n### Can an agent call Tomorrow.io Weather API and Weatherbit API without installing anything?\n\nYes. Tomorrow.io Weather API has a hosted endpoint at https://api.tomorrow.io/v4 and Weatherbit API at https://api.weatherbit.io/v2.0.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/tomorrow-io-vs-weatherbit.json, and with the fewest tokens: https://www.anchorterminal.com/compare/tomorrow-io-vs-weatherbit.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"tomorrow-io\", \"b\": \"weatherbit\"}`. From a terminal: `anchor compare tomorrow-io weatherbit`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/tomorrow-io.json and https://www.anchorterminal.com/api/v1/tools/weatherbit.json\n\n## Other comparisons with Tomorrow.io Weather API or Weatherbit API\n\n- [AccuWeather Core Weather API + MCP vs Tomorrow.io Weather API](https://www.anchorterminal.com/compare/accuweather-api-vs-tomorrow-io.md)\n- [AccuWeather Core Weather API + MCP vs Weatherbit API](https://www.anchorterminal.com/compare/accuweather-api-vs-weatherbit.md)\n- [Google Weather API (Maps Platform) vs Tomorrow.io Weather API](https://www.anchorterminal.com/compare/google-weather-api-vs-tomorrow-io.md)\n- [Google Weather API (Maps Platform) vs Weatherbit API](https://www.anchorterminal.com/compare/google-weather-api-vs-weatherbit.md)\n- [Met Office Weather DataHub (Site Specific) vs Tomorrow.io Weather API](https://www.anchorterminal.com/compare/met-office-datahub-vs-tomorrow-io.md)\n- [Met Office Weather DataHub (Site Specific) vs Weatherbit API](https://www.anchorterminal.com/compare/met-office-datahub-vs-weatherbit.md)\n- [meteoblue Weather API vs Tomorrow.io Weather API](https://www.anchorterminal.com/compare/meteoblue-vs-tomorrow-io.md)\n- [meteoblue Weather API vs Weatherbit API](https://www.anchorterminal.com/compare/meteoblue-vs-weatherbit.md)\n- [Meteomatics Weather API vs Tomorrow.io Weather API](https://www.anchorterminal.com/compare/meteomatics-vs-tomorrow-io.md)\n- [Meteomatics Weather API vs Weatherbit API](https://www.anchorterminal.com/compare/meteomatics-vs-weatherbit.md)\n- [NOAA National Weather Service API (api.weather.gov) vs Tomorrow.io Weather API](https://www.anchorterminal.com/compare/nws-api-vs-tomorrow-io.md)\n- [NOAA National Weather Service API (api.weather.gov) vs Weatherbit API](https://www.anchorterminal.com/compare/nws-api-vs-weatherbit.md)\n- [OpenWeather One Call API vs Tomorrow.io Weather API](https://www.anchorterminal.com/compare/openweather-one-call-vs-tomorrow-io.md)\n- [OpenWeather One Call API vs Weatherbit API](https://www.anchorterminal.com/compare/openweather-one-call-vs-weatherbit.md)\n- [Pirate Weather vs Tomorrow.io Weather API](https://www.anchorterminal.com/compare/pirate-weather-vs-tomorrow-io.md)\n- [Pirate Weather vs Weatherbit API](https://www.anchorterminal.com/compare/pirate-weather-vs-weatherbit.md)\n- [Tomorrow.io Weather API vs Visual Crossing Weather API](https://www.anchorterminal.com/compare/tomorrow-io-vs-visual-crossing.md)\n- [Tomorrow.io Weather API vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/tomorrow-io-vs-weather-company.md)\n- [Tomorrow.io Weather API vs WeatherAPI.com](https://www.anchorterminal.com/compare/tomorrow-io-vs-weatherapi-com.md)\n- [Tomorrow.io Weather API vs Xweather Weather API](https://www.anchorterminal.com/compare/tomorrow-io-vs-xweather.md)\n- [Visual Crossing Weather API vs Weatherbit API](https://www.anchorterminal.com/compare/visual-crossing-vs-weatherbit.md)\n- [The Weather Company Data APIs vs Weatherbit API](https://www.anchorterminal.com/compare/weather-company-vs-weatherbit.md)\n- [WeatherAPI.com vs Weatherbit API](https://www.anchorterminal.com/compare/weatherapi-com-vs-weatherbit.md)\n- [Weatherbit API vs Xweather Weather API](https://www.anchorterminal.com/compare/weatherbit-vs-xweather.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-08", "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": "Tomorrow.io Weather API vs Weatherbit API", "url": "" } ], "description": "Weatherbit API scores 57.7 (C) on agent readiness against Tomorrow.io Weather API's 51.4 (D), and leads in 3 of 7 scored categories. Tomorrow.io Weather API leads on agent ergonomics and maintenance \u0026 community. Both do weather current. Category scores, facts, verdicts and agent…", "facts": [ "Tomorrow.io Weather API D 51.4", "Weatherbit API C 57.7", "scores" ], "h1": "Tomorrow.io Weather API vs Weatherbit API", "image": "https://www.anchorterminal.com/assets/og/compare-tomorrow-io-vs-weatherbit.png", "path": "/compare/tomorrow-io-vs-weatherbit", "published": "2026-10-01", "section": "tools", "title": "Tomorrow.io Weather API vs Weatherbit API for AI agents", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/tomorrow-io-vs-weatherbit" }, "tokens": { "markdown": 2700, "slim": 780 }, "version": 1 }