{ "data": { "a": { "slug": "google-weather-api", "name": "Google Weather API (Maps Platform)", "vendor": "Google", "vendorUrl": "https://developers.google.com/maps/documentation/weather", "kind": "http-api", "category": "weather", "summary": "Google Maps Platform's API for weather data.", "url": "https://www.anchorterminal.com/tools/google-weather-api", "markdownUrl": "https://www.anchorterminal.com/tools/google-weather-api.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/google-weather-api.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/google-weather-api.json", "transports": [ "http" ], "remoteUrl": "https://weather.googleapis.com/v1", "packages": [], "auth": "api-key", "authNotes": "A Maps Platform API key from a Cloud project with billing enabled, passed as the key query parameter in the documented examples. A Maps Demo Key lets you prototype with no billing account but isn't for production. OAuth 2.0 is the Maps Platform alternative.", "pricing": "usage", "pricingNotes": "One SKU, Weather Usage, in the Essentials tier. 10,000 events a month free, then $0.15 per 1,000 to 100,000, $0.12 to 500,000, $0.09 to 1 million, $0.06 to 5 million and $0.038 above that (https://developers.google.com/maps/billing-and-pricing/pricing). A billing account has to be attached to the project before the key works outside the demo key.", "priceSummary": "$0.15 / 1k req", "where": "hosted", "x402": { "level": "no", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://developers.google.com/maps/documentation/weather/overview", "openapi": "https://weather.googleapis.com/$discovery/rest?version=v1", "capabilities": [ "weather.current", "weather.forecast", "weather.historical", "weather.alerts", "data.weather" ], "tags": [ "hosted", "closed-source", "card-required", "usage-priced", "enterprise", "oauth" ], "lastRelease": "2025-11-18", "graded": true, "anchor": { "graded": true, "score": 66.8, "grade": "B", "agentReady": false, "rank": 273, "ranked": true, "rankOf": 950, "categoryRank": 2, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 79, "maintenance": 20, "payments": 25, "reliability": 85, "schema": 82, "security": 71, "transparency": 72 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "high", "date": "2026-10-01" }, "negative": 0, "verdict": "Covered by the Maps Platform SLA, 99.9 per cent with service credits. History is 24 hours only, and bulk data isn't available.", "bestFor": "Best when the answer has to match what users see in Google products, for current conditions and 10-day forecasts with alerts.", "strengths": [ "Covered by the Maps Platform SLA, 99.9 per cent with service credits", "No Weather API incidents on the status dashboard in the last 90 days", "Discovery document with enums and descriptions on every parameter", "ISO 27001, SOC 2 and 12 months' notice for breaking changes in the terms", "Weather lookup also available through Google's registered Grounding Lite MCP server" ], "weaknesses": [ "History is 24 hours only, and bulk data isn't available", "Storing data outside the service and training or testing models on it are barred", "A Cloud project with billing is needed before production use", "No release note since 18 November 2025, and no llms.txt", "Minute forecast is Experimental and outside the deprecation promise" ], "agentNotes": [ "Ask for only the days or hours you need, one location a call. Every call is one billable event", "Page with pageSize and pageToken rather than asking for 240 hours at once", "Check the coverage page before promising alerts. Coverage is by country", "Refetch rather than cache. The Maps terms give no caching window for weather content", "Restrict the key to the Weather API and your server IPs in the Cloud console" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3, "history": [ { "basis": "public evidence", "confidence": "high", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 66.8 } ], "editorialScores": { "ergonomics": 79, "maintenance": 20, "payments": 25, "reliability": 85, "schema": 82, "security": 71, "transparency": 65 }, "provenanceScore": 78, "dataQualityScore": 67 }, "connect": { "http": "curl \"https://weather.googleapis.com/v1/currentConditions:lookup?key=$GOOGLE_MAPS_API_KEY\u0026location.latitude=51.51\u0026location.longitude=-0.13\"" }, "letme": { "capability": "https://letme.dev/weather.current", "tool": "https://letme.dev/google-weather-api" }, "sameCompany": [ "gemini-api", "gemini-embedding", "vertex-ai-tuning", "google-model-armor", "google-imagen", "google-veo", "google-lyria", "google-speech-to-text", "gemini-live", "google-adk", "google-secret-manager", "google-cloud-document-ai", "chrome-devtools-mcp", "google-maps-platform", "google-cloud-translation", "google-calendar-api", "firebase-cloud-messaging", "google-drive-api", "gemini-cli", "google-search-console", "google-ads-api", "google-forms", "google-sheets-api", "gmail-api" ], "area": "domain-data", "unitPrices": [ { "item": "Weather Usage, first 100,000", "unit": "1k-requests", "usd": 0.15, "note": "10,000 free a month" }, { "item": "Weather Usage, 100,001 to 500,000", "unit": "1k-requests", "usd": 0.12 }, { "item": "Weather Usage, 1 million to 5 million", "unit": "1k-requests", "usd": 0.06, "note": "$0.038 above 5 million" } ], "provenance": { "legalEntity": "Google LLC or a regional Google entity, by billing country", "domain": "google.com", "domainRegistered": "1997-09-15", "domainNote": "The API sits on weather.googleapis.com, Google's API domain, and the docs on developers.google.com.", "endpointOnVendorDomain": false, "terms": "https://cloud.google.com/maps-platform/terms", "privacy": "https://policies.google.com/privacy", "statusPage": "https://status.cloud.google.com/maps-platform/", "changelog": "https://developers.google.com/maps/documentation/weather/release-notes", "securityTxt": "valid", "checked": "2026-09-30", "notes": [ "The Maps Platform terms name the contracting entity through Google's entity table, with separate EEA service terms for EEA billing addresses.", "google.com/.well-known/security.txt lists security@google.com and expires 2030-04-01.", "The weather policies page lists attribution rules for weather content but defers caching to the Maps Platform terms, which don't give a weather-specific window." ], "score": 78 }, "dataQuality": { "coverage": "Near-global. No data for CN, CU, IR, KP and SY. Public alerts in dozens of countries listed on the coverage page", "coverageRating": 4, "freshness": "Current conditions every 15 minutes, hourly and daily forecasts every 30 minutes, history twice a day", "freshnessClass": "minutes", "history": "Hourly, last 24 hours", "historyYears": 0.003, "methodology": "https://developers.google.com/maps/documentation/weather/faq", "sourcesDisclosed": true, "licence": "Google Maps Platform terms. No storage outside the service, no model training, attribution required", "licenceClass": "clear", "standing": "", "standingClass": "none", "reuse": "The Maps Platform terms bar pre-fetching, indexing, storing or bulk-downloading content outside the services and using it to train, test, validate or fine-tune AI models. Display it with Google attribution and refetch it.", "score": 67, "checks": null }, "pageJsonUrl": "https://www.anchorterminal.com/tools/google-weather-api.json", "live": { "slug": "google-weather-api", "probe": { "target": "https://weather.googleapis.com/v1", "method": "get", "lastAt": "2026-10-10T02:54:56.743763713Z", "lastOk": true, "lastStatus": 404, "lastMs": 604, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 601, "p95ms24h": 667, "samples24h": 249, "samples30d": 2264, "days": [ { "date": "2026-10-01", "probes": 109, "ok": 109 }, { "date": "2026-10-02", "probes": 248, "ok": 248 }, { "date": "2026-10-03", "probes": 271, "ok": 271 }, { "date": "2026-10-04", "probes": 272, "ok": 272 }, { "date": "2026-10-05", "probes": 272, "ok": 272 }, { "date": "2026-10-06", "probes": 272, "ok": 272 }, { "date": "2026-10-07", "probes": 272, "ok": 272 }, { "date": "2026-10-08", "probes": 268, "ok": 268 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 30, "ok": 30 } ] }, "vendorStatus": { "page": "https://status.cloud.google.com/maps-platform", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-10T00:50:38.032194958Z" }, "securityTxt": { "url": "https://google.com/.well-known/security.txt", "state": "valid", "expires": "2030-04-01T00:00:00z", "checkedAt": "2026-10-09T15:39:28.443612679Z" }, "domain": { "domain": "google.com", "registered": "1997-09-15", "source": "https://rdap.verisign.com/com/v1/domain/google.com", "checkedAt": "2026-10-04T13:05:50.737985829Z" }, "pages": [ { "url": "https://developers.google.com/maps/documentation/weather/release-notes", "kind": "changelog", "status": 200, "checkedAt": "2026-10-09T18:35:55.353219776Z", "changedAt": "2026-10-06T16:07:27.346735553Z", "fingerprint": "7ff6e3099f38" } ], "updatedAt": "2026-10-10T02:54:56.743763713Z" } }, "answer": "Google Weather API (Maps Platform) scores 66.8 (B) on agent readiness against Stormglass API's 39.9 (E), and leads in 6 of 7 scored categories.", "b": { "slug": "stormglass", "name": "Stormglass API", "vendor": "Storm Glass AB", "vendorUrl": "https://stormglass.io", "kind": "http-api", "category": "weather", "summary": "Weather and marine data API from Storm Glass AB of Sweden. It returns hourly forecasts, ERA5 history from 2014, tides, solar, soil and ocean parameters by coordinates, per source or blended, over HTTPS with an API key.", "url": "https://www.anchorterminal.com/tools/stormglass", "markdownUrl": "https://www.anchorterminal.com/tools/stormglass.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/stormglass.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/stormglass.json", "license": "Proprietary service under Storm Glass AB's Terms and Conditions. The Free and Small plans are not for commercial use", "transports": [ "http" ], "remoteUrl": "https://api.stormglass.io/v2", "packages": [], "auth": "api-key", "authNotes": "Self-serve key from a browser signup at dashboard.stormglass.io. The key goes in the `Authorization` header with no prefix. No scopes, and no key rotation or second key is described in the docs.", "pricing": "freemium", "pricingNotes": "Free plan at 10 requests a day for non-commercial evaluation. Paid plans are monthly subscriptions in euros with daily quotas and no overage price, Small 19, Medium 49 and Large 129 euros a month, and commercial use needs Medium or higher. Prices are in euros only, so unitPrices is empty (https://stormglass.io/pricing/, checked 2026-10-09).", "priceSummary": "Freemium", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the API docs, the pricing page or the FAQ. The API uses HTTP 402 to mean a spent daily quota, with no payment protocol behind it (checked 2026-10-09).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-09" }, "docsUrl": "https://docs.stormglass.io/", "capabilities": [ "weather.forecast", "weather.marine", "weather.historical", "data.weather" ], "tags": [ "hosted", "freemium", "free-tier", "closed-source", "eu" ], "lastRelease": "2026-02-26", "graded": true, "anchor": { "graded": true, "score": 39.9, "grade": "E", "agentReady": false, "rank": 914, "ranked": true, "rankOf": 950, "categoryRank": 15, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 65, "maintenance": 15, "payments": 25, "reliability": 34, "schema": 40, "security": 44, "transparency": 45 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-09" }, "negative": 0, "verdict": "A read-only weather and marine API with about 70 hourly parameters, per-source values from named national models, tide data and ERA5 history from 2014. No OpenAPI file, status page, SDK or security page was found, the free plan allows 10 requests a day, and the docs and FAQ disagree on the status code for a spent quota.", "bestFor": "Marine and coastal applications that want waves, swell, currents and tides beside ordinary weather, and callers who want to compare named models in one response.", "strengths": [ "One request returns the same parameter from each named source (ECMWF, NOAA, DWD, Met Office, MET Norway and others), or one blended value with `source=sg`", "Marine coverage in the same API, with waves, swell, currents, sea ice, water temperature, tide extremes, sea level against seven datums and bathymetry", "`params` and `source` limit each response to the fields asked for, and every response carries `dailyQuota` and `requestCount` in `meta`", "The key travels in the `Authorization` header, and every documented endpoint is a GET", "Plan prices and daily quotas are public without a login, from 0 to 129 euros a month" ], "weaknesses": [ "No OpenAPI file, llms.txt, official SDK or changelog was found. The docs are eleven Markdown pages", "No status page, SLA, security.txt, disclosure policy, certification or DPA was found, and the terms disclaim uninterrupted service", "Free plan is 10 requests a day, non-commercial, and the terms call it an evaluation plan not meant for indefinite use", "The docs give 402 for a spent daily quota and the FAQ says Too Many Requests. No Retry-After or per-second limit is documented", "The privacy text is a few paragraphs inside the terms, with no retention period or hosting location, and the terms allow changes to the service without notice" ], "agentNotes": [ "Send the key as `Authorization: KEY` with no Bearer prefix. A missing or wrong key returns 403 with `{\"errors\":{\"key\":\"API key is invalid\"}}`", "Always pass `source=sg` or a short source list on `/weather/point`. The default is every source, which multiplies the size of each hourly record", "Treat 402 as a spent daily quota, not a billing failure, and stop until the next day. Read `meta.requestCount` against `meta.dailyQuota` on each response", "Use `/historical/point` for past dates, at most 10 days a call and nothing newer than about 7 days. `/weather/point` looks back 14 days only", "Send and read all times in UTC. Tide sea levels are relative to the chosen datum (MSL by default) and are not water depth" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "E", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 39.9 } ], "editorialScores": { "ergonomics": 65, "maintenance": 15, "payments": 25, "reliability": 34, "schema": 40, "security": 44, "transparency": 22 }, "provenanceScore": 68 }, "connect": { "http": "curl -H \"Authorization: API_KEY\" \"https://api.stormglass.io/v2/weather/point?lat=58.7984\u0026lng=17.8081\u0026params=waveHeight,airTemperature\u0026source=sg\"" }, "letme": { "capability": "https://letme.dev/weather.forecast", "tool": "https://letme.dev/stormglass" }, "area": "domain-data", "provenance": { "legalEntity": "Storm Glass AB", "domain": "stormglass.io", "domainRegistered": "2018-01-30", "endpointOnVendorDomain": true, "terms": "https://stormglass.io/terms-and-conditions/", "privacy": "https://stormglass.io/terms-and-conditions/", "statusPage": "", "changelog": "https://stormglass.io/blog/", "securityTxt": "none", "checked": "2026-10-09", "notes": [ "One page, dated 17 March 2026, holds the Terms and Conditions and the Privacy Policy. It says it applies to all stormglass.io Services provided by Storm Glass AB, under Swedish law with arbitration in Stockholm. No postal address or company number is on it.", "The privacy text is a section of that page and names HubSpot. No DPA or separate privacy policy was found.", "stormglass.io/.well-known/security.txt returns 404.", "No status page is linked from the site, the docs or the terms.", "No changelog was found. The blog announces new data sources, the latest on 26 February 2026 (ERA5) and 13 February 2026 (NOAA AIGFS).", "RDAP for stormglass.io gives a registration date of 2018-01-30." ], "score": 68 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/stormglass.json", "live": { "slug": "stormglass", "probe": { "target": "https://api.stormglass.io/v2", "method": "get", "lastAt": "2026-10-10T02:55:11.785033392Z", "lastOk": true, "lastStatus": 404, "lastMs": 103, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 93, "p95ms24h": 189, "samples24h": 115, "samples30d": 115, "days": [ { "date": "2026-10-09", "probes": 85, "ok": 85 }, { "date": "2026-10-10", "probes": 30, "ok": 30 } ] }, "pages": [ { "url": "https://stormglass.io/blog/", "kind": "changelog", "status": 200, "checkedAt": "2026-10-09T18:46:02.001753939Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "5a37464aafd0" }, { "url": "https://stormglass.io/pricing/", "kind": "pricing", "status": 200, "checkedAt": "2026-10-09T18:46:04.76357096Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "f271b3b3e8f6" }, { "url": "https://stormglass.io/terms-and-conditions/", "kind": "terms", "status": 200, "checkedAt": "2026-10-09T18:46:06.564080089Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "b9087482d5aa" } ], "updatedAt": "2026-10-10T02:55:11.785033392Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Google", "b": "Storm Glass AB", "name": "Vendor" }, { "a": "https://weather.googleapis.com/v1", "b": "https://api.stormglass.io/v2", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Pay per use", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "none", "b": "Proprietary service under Storm Glass AB's Terms and Conditions. The Free and Small plans are not for commercial use", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "no", "b": "no", "name": "llms.txt" }, { "a": "2025-11-18", "b": "2026-02-26", "name": "Last release" }, { "a": "2026-08-26", "b": "no date given", "name": "Terms last updated" }, { "a": "2026-10-01", "b": "no date given", "name": "Privacy policy last updated" }, { "a": "yes", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "3/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Google Weather API (Maps Platform) scores 66.8 (B) on agent readiness against Stormglass API's 39.9 (E), and leads in 6 of 7 scored categories.", "question": "Which is better for AI agents, Google Weather API (Maps Platform) or Stormglass API?" }, { "answer": "Both need an API key.", "question": "Do Google Weather API (Maps Platform) and Stormglass API need an API key?" }, { "answer": "Yes. Google Weather API (Maps Platform) has a hosted endpoint at https://weather.googleapis.com/v1 and Stormglass API at https://api.stormglass.io/v2.", "question": "Can an agent call Google Weather API (Maps Platform) and Stormglass API without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 85 against 34", "Schema \u0026 documentation, 82 against 40", "Agent ergonomics, 79 against 65", "Security \u0026 auth, 71 against 44", "Maintenance \u0026 community, 20 against 15", "Transparency \u0026 trust, 72 against 45" ], "also": null, "goodFor": "Best when the answer has to match what users see in Google products, for current conditions and 10-day forecasts with alerts.", "slug": "google-weather-api", "watchFor": "History is 24 hours only, and bulk data isn't available" }, { "aheadOn": null, "also": null, "goodFor": "Marine and coastal applications that want waves, swell, currents and tides beside ordinary weather, and callers who want to compare named models in one response.", "slug": "stormglass", "watchFor": "No OpenAPI file, llms.txt, official SDK or changelog was found. The docs are eleven Markdown pages" } ], "job": { "capability": "weather.forecast", "name": "Weather forecasts" }, "others": [ { "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-google-weather-api.json", "title": "AccuWeather Core Weather API + MCP vs Google Weather API (Maps Platform)", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-google-weather-api" }, { "json": "https://www.anchorterminal.com/compare/google-weather-api-vs-met-office-datahub.json", "title": "Google Weather API (Maps Platform) vs Met Office Weather DataHub (Site Specific)", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-met-office-datahub" }, { "json": "https://www.anchorterminal.com/compare/google-weather-api-vs-meteoblue.json", "title": "Google Weather API (Maps Platform) vs meteoblue Weather API", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-meteoblue" }, { "json": "https://www.anchorterminal.com/compare/google-weather-api-vs-meteomatics.json", "title": "Google Weather API (Maps Platform) vs Meteomatics Weather API", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-meteomatics" }, { "json": "https://www.anchorterminal.com/compare/google-weather-api-vs-nws-api.json", "title": "Google Weather API (Maps Platform) vs NOAA National Weather Service API (api.weather.gov)", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-nws-api" }, { "json": "https://www.anchorterminal.com/compare/google-weather-api-vs-openweather-one-call.json", "title": "Google Weather API (Maps Platform) vs OpenWeather One Call API", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-openweather-one-call" }, { "json": "https://www.anchorterminal.com/compare/google-weather-api-vs-pirate-weather.json", "title": "Google Weather API (Maps Platform) vs Pirate Weather", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-pirate-weather" }, { "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-visual-crossing.json", "title": "Google Weather API (Maps Platform) vs Visual Crossing Weather API", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-visual-crossing" }, { "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/google-weather-api-vs-weatherapi-com.json", "title": "Google Weather API (Maps Platform) vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-weatherapi-com" }, { "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/google-weather-api-vs-xweather.json", "title": "Google Weather API (Maps Platform) vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-xweather" }, { "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/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/accuweather-api-vs-stormglass.json", "title": "AccuWeather Core Weather API + MCP vs Stormglass API", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-stormglass" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-stormglass.json", "title": "Met Office Weather DataHub (Site Specific) vs Stormglass API", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-stormglass" }, { "json": "https://www.anchorterminal.com/compare/meteoblue-vs-stormglass.json", "title": "meteoblue Weather API vs Stormglass API", "url": "https://www.anchorterminal.com/compare/meteoblue-vs-stormglass" }, { "json": "https://www.anchorterminal.com/compare/meteomatics-vs-stormglass.json", "title": "Meteomatics Weather API vs Stormglass API", "url": "https://www.anchorterminal.com/compare/meteomatics-vs-stormglass" }, { "json": "https://www.anchorterminal.com/compare/nws-api-vs-stormglass.json", "title": "NOAA National Weather Service API (api.weather.gov) vs Stormglass API", "url": "https://www.anchorterminal.com/compare/nws-api-vs-stormglass" }, { "json": "https://www.anchorterminal.com/compare/openweather-one-call-vs-stormglass.json", "title": "OpenWeather One Call API vs Stormglass API", "url": "https://www.anchorterminal.com/compare/openweather-one-call-vs-stormglass" }, { "json": "https://www.anchorterminal.com/compare/pirate-weather-vs-stormglass.json", "title": "Pirate Weather vs Stormglass API", "url": "https://www.anchorterminal.com/compare/pirate-weather-vs-stormglass" }, { "json": "https://www.anchorterminal.com/compare/stormglass-vs-tomorrow-io.json", "title": "Stormglass API vs Tomorrow.io Weather API", "url": "https://www.anchorterminal.com/compare/stormglass-vs-tomorrow-io" }, { "json": "https://www.anchorterminal.com/compare/stormglass-vs-visual-crossing.json", "title": "Stormglass API vs Visual Crossing Weather API", "url": "https://www.anchorterminal.com/compare/stormglass-vs-visual-crossing" }, { "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" }, { "json": "https://www.anchorterminal.com/compare/stormglass-vs-weatherapi-com.json", "title": "Stormglass API vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/stormglass-vs-weatherapi-com" }, { "json": "https://www.anchorterminal.com/compare/stormglass-vs-weatherbit.json", "title": "Stormglass API vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/stormglass-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/stormglass-vs-xweather.json", "title": "Stormglass API vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/stormglass-vs-xweather" } ], "scores": [ { "by": 51, "edge": "google-weather-api", "google-weather-api": 85, "key": "reliability", "name": "Reliability", "stormglass": 34, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 42, "edge": "google-weather-api", "google-weather-api": 82, "key": "schema", "name": "Schema \u0026 documentation", "stormglass": 40, "weight": 13 }, { "by": 14, "edge": "google-weather-api", "google-weather-api": 79, "key": "ergonomics", "name": "Agent ergonomics", "stormglass": 65, "weight": 13 }, { "by": 27, "edge": "google-weather-api", "google-weather-api": 71, "key": "security", "name": "Security \u0026 auth", "stormglass": 44, "weight": 14 }, { "by": 0, "edge": "", "google-weather-api": 25, "key": "payments", "name": "Payments \u0026 pricing", "stormglass": 25, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 5, "edge": "google-weather-api", "google-weather-api": 20, "key": "maintenance", "name": "Maintenance \u0026 community", "stormglass": 15, "weight": 7 }, { "by": 27, "edge": "google-weather-api", "google-weather-api": 72, "key": "transparency", "name": "Transparency \u0026 trust", "stormglass": 45, "weight": 7 } ], "summary": "Google Weather API (Maps Platform) scores 66.8 (B) on agent readiness against Stormglass API's 39.9 (E), and leads in 6 of 7 scored categories. Both do weather forecasts.", "verdicts": { "google-weather-api": "Covered by the Maps Platform SLA, 99.9 per cent with service credits. History is 24 hours only, and bulk data isn't available.", "stormglass": "A read-only weather and marine API with about 70 hourly parameters, per-source values from named national models, tide data and ERA5 history from 2014. No OpenAPI file, status page, SDK or security page was found, the free plan allows 10 requests a day, and the docs and FAQ disagree on the status code for a spent quota." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/google-weather-api-vs-stormglass", "json": "https://www.anchorterminal.com/compare/google-weather-api-vs-stormglass.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/google-weather-api-vs-stormglass.md", "slim": "https://www.anchorterminal.com/compare/google-weather-api-vs-stormglass.min.md" }, "markdown": "Google Weather API (Maps Platform) scores 66.8 (B) on agent readiness against Stormglass API's 39.9 (E), and leads in 6 of 7 scored categories. Both do weather forecasts.\n\n- Google Weather API (Maps Platform): grade B, 66.8/100, rank #273 of 950. Markdown https://www.anchorterminal.com/tools/google-weather-api.md · JSON https://www.anchorterminal.com/api/v1/tools/google-weather-api.json\n- Stormglass API: grade E, 39.9/100, rank #914 of 950. Markdown https://www.anchorterminal.com/tools/stormglass.md · JSON https://www.anchorterminal.com/api/v1/tools/stormglass.json\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### Google Weather API (Maps Platform) (B)\n\nGood for: Best when the answer has to match what users see in Google products, for current conditions and 10-day forecasts with alerts.\n\nAhead on:\n- Reliability, 85 against 34\n- Schema \u0026 documentation, 82 against 40\n- Agent ergonomics, 79 against 65\n- Security \u0026 auth, 71 against 44\n- Maintenance \u0026 community, 20 against 15\n- Transparency \u0026 trust, 72 against 45\n\nWatch for: History is 24 hours only, and bulk data isn't available\n\n### Stormglass API (E)\n\nGood for: Marine and coastal applications that want waves, swell, currents and tides beside ordinary weather, and callers who want to compare named models in one response.\n\nWatch for: No OpenAPI file, llms.txt, official SDK or changelog was found. The docs are eleven Markdown pages\n\n\n## Score by category\n\n| Category | Weight | Google Weather API (Maps Platform) | Stormglass API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 85 | 34 | Google Weather API (Maps Platform) +51 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 82 | 40 | Google Weather API (Maps Platform) +42 |\n| Agent ergonomics | 13% (16.2 this run) | 79 | 65 | Google Weather API (Maps Platform) +14 |\n| Security \u0026 auth | 14% (17.5 this run) | 71 | 44 | Google Weather API (Maps Platform) +27 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 25 | 25 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 20 | 15 | Google Weather API (Maps Platform) +5 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 72 | 45 | Google Weather API (Maps Platform) +27 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **66.8 · B** | **39.9 · E** | |\n\n## Facts side by side\n\n| Fact | Google Weather API (Maps Platform) | Stormglass API |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Google | Storm Glass AB |\n| Hosted endpoint | `https://weather.googleapis.com/v1` | `https://api.stormglass.io/v2` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Pay per use | Freemium |\n| x402 | no | no |\n| Licence | none | Proprietary service under Storm Glass AB's Terms and Conditions. The Free and Small plans are not for commercial use |\n| Read-only variant documented | no | no |\n| llms.txt | no | no |\n| Last release | 2025-11-18 | 2026-02-26 |\n| Terms last updated | 2026-08-26 | no date given |\n| Privacy policy last updated | 2026-10-01 | no date given |\n| Customer content may train models | yes | not found in the text |\n| Terms restrict automated access | yes | not found in the text |\n| Terms restrict benchmarking | yes | not found in the text |\n| Terms or service can change without notice | not found in the text | yes |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Agent reviews | 3/5 (2) | none |\n\n## Verdicts\n\n**Google Weather API (Maps Platform).** Covered by the Maps Platform SLA, 99.9 per cent with service credits. History is 24 hours only, and bulk data isn't available.\n\n**Stormglass API.** A read-only weather and marine API with about 70 hourly parameters, per-source values from named national models, tide data and ERA5 history from 2014. No OpenAPI file, status page, SDK or security page was found, the free plan allows 10 requests a day, and the docs and FAQ disagree on the status code for a spent quota.\n\n## Before you call either\n\n### Google Weather API (Maps Platform)\n\n1. Ask for only the days or hours you need, one location a call. Every call is one billable event\n2. Page with pageSize and pageToken rather than asking for 240 hours at once\n3. Check the coverage page before promising alerts. Coverage is by country\n4. Refetch rather than cache. The Maps terms give no caching window for weather content\n5. Restrict the key to the Weather API and your server IPs in the Cloud console\n\n### Stormglass API\n\n1. Send the key as `Authorization: KEY` with no Bearer prefix. A missing or wrong key returns 403 with `{\"errors\":{\"key\":\"API key is invalid\"}}`\n2. Always pass `source=sg` or a short source list on `/weather/point`. The default is every source, which multiplies the size of each hourly record\n3. Treat 402 as a spent daily quota, not a billing failure, and stop until the next day. Read `meta.requestCount` against `meta.dailyQuota` on each response\n4. Use `/historical/point` for past dates, at most 10 days a call and nothing newer than about 7 days. `/weather/point` looks back 14 days only\n5. Send and read all times in UTC. Tide sea levels are relative to the chosen datum (MSL by default) and are not water depth\n\n## Questions\n\n### Which is better for AI agents, Google Weather API (Maps Platform) or Stormglass API?\n\nGoogle Weather API (Maps Platform) scores 66.8 (B) on agent readiness against Stormglass API's 39.9 (E), and leads in 6 of 7 scored categories.\n\n### Do Google Weather API (Maps Platform) and Stormglass API need an API key?\n\nBoth need an API key.\n\n### Can an agent call Google Weather API (Maps Platform) and Stormglass API without installing anything?\n\nYes. Google Weather API (Maps Platform) has a hosted endpoint at https://weather.googleapis.com/v1 and Stormglass API at https://api.stormglass.io/v2.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/google-weather-api-vs-stormglass.json, and with the fewest tokens: https://www.anchorterminal.com/compare/google-weather-api-vs-stormglass.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"google-weather-api\", \"b\": \"stormglass\"}`. From a terminal: `anchor compare google-weather-api stormglass`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/google-weather-api.json and https://www.anchorterminal.com/api/v1/tools/stormglass.json\n\n## Other comparisons with Google Weather API (Maps Platform) or Stormglass API\n\n- [AccuWeather Core Weather API + MCP vs Google Weather API (Maps Platform)](https://www.anchorterminal.com/compare/accuweather-api-vs-google-weather-api.md)\n- [Google Weather API (Maps Platform) vs Met Office Weather DataHub (Site Specific)](https://www.anchorterminal.com/compare/google-weather-api-vs-met-office-datahub.md)\n- [Google Weather API (Maps Platform) vs meteoblue Weather API](https://www.anchorterminal.com/compare/google-weather-api-vs-meteoblue.md)\n- [Google Weather API (Maps Platform) vs Meteomatics Weather API](https://www.anchorterminal.com/compare/google-weather-api-vs-meteomatics.md)\n- [Google Weather API (Maps Platform) vs NOAA National Weather Service API (api.weather.gov)](https://www.anchorterminal.com/compare/google-weather-api-vs-nws-api.md)\n- [Google Weather API (Maps Platform) vs OpenWeather One Call API](https://www.anchorterminal.com/compare/google-weather-api-vs-openweather-one-call.md)\n- [Google Weather API (Maps Platform) vs Pirate Weather](https://www.anchorterminal.com/compare/google-weather-api-vs-pirate-weather.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 Visual Crossing Weather API](https://www.anchorterminal.com/compare/google-weather-api-vs-visual-crossing.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- [Google Weather API (Maps Platform) vs WeatherAPI.com](https://www.anchorterminal.com/compare/google-weather-api-vs-weatherapi-com.md)\n- [Google Weather API (Maps Platform) vs Weatherbit API](https://www.anchorterminal.com/compare/google-weather-api-vs-weatherbit.md)\n- [Google Weather API (Maps Platform) vs Xweather Weather API](https://www.anchorterminal.com/compare/google-weather-api-vs-xweather.md)\n- [Google Weather API (Maps Platform) vs Open-Meteo](https://www.anchorterminal.com/compare/google-weather-api-vs-open-meteo.md)\n- [Open-Meteo vs Stormglass API](https://www.anchorterminal.com/compare/open-meteo-vs-stormglass.md)\n- [AccuWeather Core Weather API + MCP vs Stormglass API](https://www.anchorterminal.com/compare/accuweather-api-vs-stormglass.md)\n- [Met Office Weather DataHub (Site Specific) vs Stormglass API](https://www.anchorterminal.com/compare/met-office-datahub-vs-stormglass.md)\n- [meteoblue Weather API vs Stormglass API](https://www.anchorterminal.com/compare/meteoblue-vs-stormglass.md)\n- [Meteomatics Weather API vs Stormglass API](https://www.anchorterminal.com/compare/meteomatics-vs-stormglass.md)\n- [NOAA National Weather Service API (api.weather.gov) vs Stormglass API](https://www.anchorterminal.com/compare/nws-api-vs-stormglass.md)\n- [OpenWeather One Call API vs Stormglass API](https://www.anchorterminal.com/compare/openweather-one-call-vs-stormglass.md)\n- [Pirate Weather vs Stormglass API](https://www.anchorterminal.com/compare/pirate-weather-vs-stormglass.md)\n- [Stormglass API vs Tomorrow.io Weather API](https://www.anchorterminal.com/compare/stormglass-vs-tomorrow-io.md)\n- [Stormglass API vs Visual Crossing Weather API](https://www.anchorterminal.com/compare/stormglass-vs-visual-crossing.md)\n- [Stormglass API vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/stormglass-vs-weather-company.md)\n- [Stormglass API vs WeatherAPI.com](https://www.anchorterminal.com/compare/stormglass-vs-weatherapi-com.md)\n- [Stormglass API vs Weatherbit API](https://www.anchorterminal.com/compare/stormglass-vs-weatherbit.md)\n- [Stormglass API vs Xweather Weather API](https://www.anchorterminal.com/compare/stormglass-vs-xweather.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": "Google Weather API (Maps Platform) vs Stormglass API", "url": "" } ], "description": "Google Weather scores 66.8 (B) to Stormglass's 39.9 (E) for weather forecasts. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Google Weather API (Maps Platform) B 66.8", "Stormglass API E 39.9", "scores" ], "h1": "Google Weather API (Maps Platform) vs Stormglass API", "image": "https://www.anchorterminal.com/assets/og/compare-google-weather-api-vs-stormglass.png", "path": "/compare/google-weather-api-vs-stormglass", "published": "2026-10-01", "section": "tools", "title": "Google Weather vs Stormglass for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-stormglass" }, "tokens": { "markdown": 2800, "slim": 680 }, "version": 1 }