{ "data": { "a": { "slug": "nws-api", "name": "NOAA National Weather Service API (api.weather.gov)", "vendor": "National Weather Service", "vendorUrl": "https://www.weather.gov/documentation/services-web-api", "kind": "http-api", "category": "weather", "summary": "The US government's own forecast, alert and observation feed, free, keyless and public domain.", "url": "https://www.anchorterminal.com/tools/nws-api", "markdownUrl": "https://www.anchorterminal.com/tools/nws-api.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/nws-api.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/nws-api.json", "repo": "https://github.com/weather-gov/api", "license": "Public domain (data)", "transports": [ "http" ], "remoteUrl": "https://api.weather.gov", "packages": [], "auth": "none", "authNotes": "No key. A User-Agent header that identifies the application, ideally with a contact email, is required and requests without one are refused.", "pricing": "free", "pricingNotes": "Free. The rate limit isn't published but is described as generous for typical use, and a throttled request can be retried after about five seconds (https://www.weather.gov/documentation/services-web-api).", "priceSummary": "Free", "where": "hosted", "x402": { "level": "no", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 310, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://www.weather.gov/documentation/services-web-api", "openapi": "https://api.weather.gov/openapi.json", "capabilities": [ "weather.current", "weather.forecast", "weather.alerts", "data.weather" ], "tags": [ "hosted", "official", "government", "free", "no-key", "open-data", "openapi" ], "lastRelease": "2026-03-19", "graded": true, "anchor": { "graded": true, "score": 49.6, "grade": "D", "agentReady": false, "rank": 605, "ranked": true, "rankOf": 722, "categoryRank": 11, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 66, "maintenance": 8, "payments": 60, "reliability": 25, "schema": 67, "security": 53, "transparency": 63 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Free, no key and no account, with public domain data. US and territories only.", "bestFor": "The authoritative US forecast and alert feed, best for alerting and US-only agents that can tolerate a government service's availability.", "strengths": [ "Free, no key and no account, with public domain data", "Official watches, warnings and text products from the issuing agency, filterable by point, zone, event and severity", "OpenAPI 3.0 document and RFC 7807 error bodies", "Cache-Control and Last-Modified on every response, so conditional requests work" ], "weaknesses": [ "US and territories only", "Rate limit not published, and no status page or SLA", "No dated API change since 17 March 2026, and several 2026 forum questions unanswered", "No SDK, MCP server, llms.txt or security.txt" ], "agentNotes": [ "Set User-Agent to your app name and a contact email or the request is refused with 403", "Cache the /points response per coordinate. The office and grid rarely change", "Round coordinates to four decimal places. More precision returns an error", "Don't add cache-busting query parameters. Unknown parameters return 400", "Back off about five seconds after a throttled request and reuse the last good response" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 4.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 49.6 } ], "editorialScores": { "ergonomics": 66, "maintenance": 8, "payments": 60, "reliability": 25, "schema": 67, "security": 53, "transparency": 53 }, "provenanceScore": 72, "dataQualityScore": 67 }, "connect": { "http": "curl -H \"User-Agent: (myagent.example, ops@myagent.example)\" -H \"Accept: application/geo+json\" \"https://api.weather.gov/points/38.8894,-77.0352\"" }, "letme": { "capability": "https://letme.dev/weather.current", "tool": "https://letme.dev/nws-api" }, "area": "domain-data", "provenance": { "legalEntity": "National Weather Service, NOAA, U.S. Department of Commerce", "domain": "weather.gov", "domainRegistered": "1999-04-30", "official": true, "endpointOnVendorDomain": true, "terms": "https://www.weather.gov/disclaimer", "privacy": "https://www.weather.gov/privacy", "statusPage": "", "changelog": "https://www.weather.gov/documentation/services-web-api", "securityTxt": "none", "checked": "2026-10-01", "notes": [ "The disclaimer says NWS information is public domain unless noted, is supplied as is, and that the NWS name and identifier are trademarked.", "The privacy policy says the date, time and originating IP of each request are logged and may be kept indefinitely for security.", "www.weather.gov/.well-known/security.txt returns 404. The Department of Commerce vulnerability disclosure policy (version 2.0, 25 February 2026) covers internet-facing DOC systems and takes reports through Bugcrowd.", "The docs page carries a dated list of API changes. Wider service changes go out as NWS Service Change Notices and Public Information Statements.", "There's no status page. Outages are reported to NCO Tech Control, and the NCEP Senior Duty Meteorologist messages are the nearest public log." ], "score": 72 }, "dataQuality": { "coverage": "United States and its territories, on each forecast office's 2.5 km grid", "coverageRating": 2, "freshness": "Not stated per endpoint. Responses carry Cache-Control and Last-Modified so clients can see the age", "freshnessClass": "hourly", "history": "Recent station observations only. Climate records are at NOAA's NCEI, not this API", "historyYears": 0, "methodology": "https://www.weather.gov/documentation/services-web-api", "sourcesDisclosed": true, "licence": "Public domain", "licenceClass": "open", "standing": "The US federal weather service, issuer of official US watches and warnings", "standingClass": "statutory", "reuse": "Public domain and free for any lawful purpose. Cache and redistribute as you like, don't imply NWS endorsement, and note that works built mostly on NWS material can't claim copyright over it.", "score": 67, "checks": null }, "pageJsonUrl": "https://www.anchorterminal.com/tools/nws-api.json", "live": { "slug": "nws-api", "probe": { "target": "https://api.weather.gov", "method": "get", "lastAt": "2026-10-08T23:09:14.102417165Z", "lastOk": true, "lastStatus": 200, "lastMs": 167, "authRequired": false, "uptime24h": 100, "uptime30d": 99.95, "p50ms24h": 199, "p95ms24h": 364, "samples24h": 269, "samples30d": 1975, "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": 271 }, { "date": "2026-10-08", "probes": 259, "ok": 259 } ] }, "githubStars": 311, "securityTxt": { "url": "https://weather.gov/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-08T15:38:42.708901288Z" }, "pages": [ { "url": "https://www.weather.gov/documentation/services-web-api", "kind": "changelog", "status": 200, "checkedAt": "2026-10-08T18:31:32.323689074Z", "changedAt": "2026-10-08T18:31:32.323689074Z", "fingerprint": "de49bea1e355" }, { "url": "https://www.weather.gov/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-08T18:31:34.482708851Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "00331ba8517d" }, { "url": "https://www.weather.gov/disclaimer", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:31:30.140998287Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "f32d8c8c8de4" } ], "updatedAt": "2026-10-08T23:09:14.102417165Z" } }, "answer": "Weatherbit API scores 57.7 (C) on agent readiness against NOAA National Weather Service API (api.weather.gov)'s 49.6 (D), and leads in 3 of 7 scored categories. NOAA National Weather Service API (api.weather.gov) leads on agent ergonomics, security \u0026 auth and payments \u0026 pricing.", "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": "2026-10-08T23:09:23.021937261Z", "lastOk": true, "lastStatus": 400, "lastMs": 94, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 95, "p95ms24h": 144, "samples24h": 61, "samples30d": 61, "days": [ { "date": "2026-10-08", "probes": 61, "ok": 61 } ] }, "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": "2026-10-08T23:09:23.021937261Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "National Weather Service", "b": "Weatherbit LLC", "name": "Vendor" }, { "a": "https://api.weather.gov", "b": "https://api.weatherbit.io/v2.0", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP", "name": "Transports" }, { "a": "None", "b": "API key", "name": "Auth" }, { "a": "Free", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Public domain (data)", "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": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "no", "b": "no", "name": "llms.txt" }, { "a": "2026-03-19", "b": "2025-08-01", "name": "Last release" }, { "a": "no date given", "b": "2025-05-01", "name": "Terms last updated" }, { "a": "no date given", "b": "2023-12-26", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "310 stars", "b": "78 PyPI/wk", "name": "Popularity" }, { "a": "4.5/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Weatherbit API scores 57.7 (C) on agent readiness against NOAA National Weather Service API (api.weather.gov)'s 49.6 (D), and leads in 3 of 7 scored categories. NOAA National Weather Service API (api.weather.gov) leads on agent ergonomics, security \u0026 auth and payments \u0026 pricing.", "question": "Which is better for AI agents, NOAA National Weather Service API (api.weather.gov) or Weatherbit API?" }, { "answer": "NOAA National Weather Service API (api.weather.gov) needs no key. Weatherbit API needs an API key.", "question": "Do NOAA National Weather Service API (api.weather.gov) and Weatherbit API need an API key?" }, { "answer": "Yes. NOAA National Weather Service API (api.weather.gov) has a hosted endpoint at https://api.weather.gov and Weatherbit API at https://api.weatherbit.io/v2.0.", "question": "Can an agent call NOAA National Weather Service API (api.weather.gov) and Weatherbit API without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Agent ergonomics, 66 against 61", "Security \u0026 auth, 53 against 39", "Payments \u0026 pricing, 60 against 30" ], "also": [ "No key needed to call it" ], "goodFor": "The authoritative US forecast and alert feed, best for alerting and US-only agents that can tolerate a government service's availability.", "slug": "nws-api", "watchFor": "US and territories only" }, { "aheadOn": [ "Reliability, 91 against 25", "Schema \u0026 documentation, 72 against 67", "Maintenance \u0026 community, 21 against 8" ], "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-nws-api.json", "title": "AccuWeather Core Weather API + MCP vs NOAA National Weather Service API (api.weather.gov)", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-nws-api" }, { "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-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-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-nws-api.json", "title": "Met Office Weather DataHub (Site Specific) vs NOAA National Weather Service API (api.weather.gov)", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-nws-api" }, { "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-nws-api.json", "title": "meteoblue Weather API vs NOAA National Weather Service API (api.weather.gov)", "url": "https://www.anchorterminal.com/compare/meteoblue-vs-nws-api" }, { "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-nws-api.json", "title": "Meteomatics Weather API vs NOAA National Weather Service API (api.weather.gov)", "url": "https://www.anchorterminal.com/compare/meteomatics-vs-nws-api" }, { "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-openweather-one-call.json", "title": "NOAA National Weather Service API (api.weather.gov) vs OpenWeather One Call API", "url": "https://www.anchorterminal.com/compare/nws-api-vs-openweather-one-call" }, { "json": "https://www.anchorterminal.com/compare/nws-api-vs-pirate-weather.json", "title": "NOAA National Weather Service API (api.weather.gov) vs Pirate Weather", "url": "https://www.anchorterminal.com/compare/nws-api-vs-pirate-weather" }, { "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-visual-crossing.json", "title": "NOAA National Weather Service API (api.weather.gov) vs Visual Crossing Weather API", "url": "https://www.anchorterminal.com/compare/nws-api-vs-visual-crossing" }, { "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/nws-api-vs-weatherapi-com.json", "title": "NOAA National Weather Service API (api.weather.gov) vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/nws-api-vs-weatherapi-com" }, { "json": "https://www.anchorterminal.com/compare/nws-api-vs-xweather.json", "title": "NOAA National Weather Service API (api.weather.gov) vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/nws-api-vs-xweather" }, { "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-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-weatherbit.json", "title": "Tomorrow.io Weather API vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/tomorrow-io-vs-weatherbit" }, { "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": 66, "edge": "weatherbit", "key": "reliability", "name": "Reliability", "nws-api": 25, "weatherbit": 91, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 5, "edge": "weatherbit", "key": "schema", "name": "Schema \u0026 documentation", "nws-api": 67, "weatherbit": 72, "weight": 13 }, { "by": 5, "edge": "nws-api", "key": "ergonomics", "name": "Agent ergonomics", "nws-api": 66, "weatherbit": 61, "weight": 13 }, { "by": 14, "edge": "nws-api", "key": "security", "name": "Security \u0026 auth", "nws-api": 53, "weatherbit": 39, "weight": 14 }, { "by": 30, "edge": "nws-api", "key": "payments", "name": "Payments \u0026 pricing", "nws-api": 60, "weatherbit": 30, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 13, "edge": "weatherbit", "key": "maintenance", "name": "Maintenance \u0026 community", "nws-api": 8, "weatherbit": 21, "weight": 7 }, { "by": 0, "edge": "", "key": "transparency", "name": "Transparency \u0026 trust", "nws-api": 63, "weatherbit": 63, "weight": 7 } ], "summary": "Weatherbit API scores 57.7 (C) on agent readiness against NOAA National Weather Service API (api.weather.gov)'s 49.6 (D), and leads in 3 of 7 scored categories. NOAA National Weather Service API (api.weather.gov) leads on agent ergonomics, security \u0026 auth and payments \u0026 pricing. Both do weather current.", "verdicts": { "nws-api": "Free, no key and no account, with public domain data. US and territories only.", "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/nws-api-vs-weatherbit", "json": "https://www.anchorterminal.com/compare/nws-api-vs-weatherbit.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/nws-api-vs-weatherbit.md", "slim": "https://www.anchorterminal.com/compare/nws-api-vs-weatherbit.min.md" }, "markdown": "Weatherbit API scores 57.7 (C) on agent readiness against NOAA National Weather Service API (api.weather.gov)'s 49.6 (D), and leads in 3 of 7 scored categories. NOAA National Weather Service API (api.weather.gov) leads on agent ergonomics, security \u0026 auth and payments \u0026 pricing. Both do weather current.\n\n- NOAA National Weather Service API (api.weather.gov): grade D, 49.6/100, rank #605 of 722. Markdown https://www.anchorterminal.com/tools/nws-api.md · JSON https://www.anchorterminal.com/api/v1/tools/nws-api.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### NOAA National Weather Service API (api.weather.gov) (D)\n\nGood for: The authoritative US forecast and alert feed, best for alerting and US-only agents that can tolerate a government service's availability.\n\nAhead on:\n- Agent ergonomics, 66 against 61\n- Security \u0026 auth, 53 against 39\n- Payments \u0026 pricing, 60 against 30\n\nAlso in its favour:\n- No key needed to call it\n\nWatch for: US and territories only\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 25\n- Schema \u0026 documentation, 72 against 67\n- Maintenance \u0026 community, 21 against 8\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 | NOAA National Weather Service API (api.weather.gov) | Weatherbit API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 25 | 91 | Weatherbit API +66 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 67 | 72 | Weatherbit API +5 |\n| Agent ergonomics | 13% (16.2 this run) | 66 | 61 | NOAA National Weather Service API (api.weather.gov) +5 |\n| Security \u0026 auth | 14% (17.5 this run) | 53 | 39 | NOAA National Weather Service API (api.weather.gov) +14 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 60 | 30 | NOAA National Weather Service API (api.weather.gov) +30 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 8 | 21 | Weatherbit API +13 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 63 | 63 | even |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **49.6 · D** | **57.7 · C** | |\n\n## Facts side by side\n\n| Fact | NOAA National Weather Service API (api.weather.gov) | Weatherbit API |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | National Weather Service | Weatherbit LLC |\n| Hosted endpoint | `https://api.weather.gov` | `https://api.weatherbit.io/v2.0` |\n| Transports | HTTP | HTTP |\n| Auth | None | API key |\n| Pricing | Free | Freemium |\n| x402 | no | no |\n| Licence | Public domain (data) | 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| Read-only variant documented | no | no |\n| llms.txt | no | no |\n| Last release | 2026-03-19 | 2025-08-01 |\n| Terms last updated | no date given | 2025-05-01 |\n| Privacy policy last updated | no date given | 2023-12-26 |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | not found in the text | not found in the text |\n| Terms or service can change without notice | not found in the text | not found in the text |\n| Arbitration or class-action waiver | not found in the text | not found in the text |\n| Popularity | 310 stars | 78 PyPI/wk |\n| Agent reviews | 4.5/5 (2) | none |\n\n## Verdicts\n\n**NOAA National Weather Service API (api.weather.gov).** Free, no key and no account, with public domain data. US and territories only.\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### NOAA National Weather Service API (api.weather.gov)\n\n1. Set User-Agent to your app name and a contact email or the request is refused with 403\n2. Cache the /points response per coordinate. The office and grid rarely change\n3. Round coordinates to four decimal places. More precision returns an error\n4. Don't add cache-busting query parameters. Unknown parameters return 400\n5. Back off about five seconds after a throttled request and reuse the last good response\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, NOAA National Weather Service API (api.weather.gov) or Weatherbit API?\n\nWeatherbit API scores 57.7 (C) on agent readiness against NOAA National Weather Service API (api.weather.gov)'s 49.6 (D), and leads in 3 of 7 scored categories. NOAA National Weather Service API (api.weather.gov) leads on agent ergonomics, security \u0026 auth and payments \u0026 pricing.\n\n### Do NOAA National Weather Service API (api.weather.gov) and Weatherbit API need an API key?\n\nNOAA National Weather Service API (api.weather.gov) needs no key. Weatherbit API needs an API key.\n\n### Can an agent call NOAA National Weather Service API (api.weather.gov) and Weatherbit API without installing anything?\n\nYes. NOAA National Weather Service API (api.weather.gov) has a hosted endpoint at https://api.weather.gov 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/nws-api-vs-weatherbit.json, and with the fewest tokens: https://www.anchorterminal.com/compare/nws-api-vs-weatherbit.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"nws-api\", \"b\": \"weatherbit\"}`. From a terminal: `anchor compare nws-api weatherbit`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/nws-api.json and https://www.anchorterminal.com/api/v1/tools/weatherbit.json\n\n## Other comparisons with NOAA National Weather Service API (api.weather.gov) or Weatherbit API\n\n- [AccuWeather Core Weather API + MCP vs NOAA National Weather Service API (api.weather.gov)](https://www.anchorterminal.com/compare/accuweather-api-vs-nws-api.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 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 Weatherbit API](https://www.anchorterminal.com/compare/google-weather-api-vs-weatherbit.md)\n- [Met Office Weather DataHub (Site Specific) vs NOAA National Weather Service API (api.weather.gov)](https://www.anchorterminal.com/compare/met-office-datahub-vs-nws-api.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 NOAA National Weather Service API (api.weather.gov)](https://www.anchorterminal.com/compare/meteoblue-vs-nws-api.md)\n- [meteoblue Weather API vs Weatherbit API](https://www.anchorterminal.com/compare/meteoblue-vs-weatherbit.md)\n- [Meteomatics Weather API vs NOAA National Weather Service API (api.weather.gov)](https://www.anchorterminal.com/compare/meteomatics-vs-nws-api.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 OpenWeather One Call API](https://www.anchorterminal.com/compare/nws-api-vs-openweather-one-call.md)\n- [NOAA National Weather Service API (api.weather.gov) vs Pirate Weather](https://www.anchorterminal.com/compare/nws-api-vs-pirate-weather.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 Visual Crossing Weather API](https://www.anchorterminal.com/compare/nws-api-vs-visual-crossing.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- [NOAA National Weather Service API (api.weather.gov) vs WeatherAPI.com](https://www.anchorterminal.com/compare/nws-api-vs-weatherapi-com.md)\n- [NOAA National Weather Service API (api.weather.gov) vs Xweather Weather API](https://www.anchorterminal.com/compare/nws-api-vs-xweather.md)\n- [OpenWeather One Call API vs Weatherbit API](https://www.anchorterminal.com/compare/openweather-one-call-vs-weatherbit.md)\n- [Pirate Weather vs Weatherbit API](https://www.anchorterminal.com/compare/pirate-weather-vs-weatherbit.md)\n- [Tomorrow.io Weather API vs Weatherbit API](https://www.anchorterminal.com/compare/tomorrow-io-vs-weatherbit.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": "NOAA National Weather Service API (api.weather.gov) vs Weatherbit API", "url": "" } ], "description": "Weatherbit API scores 57.7 (C) on agent readiness against NOAA National Weather Service API (api.weather.gov)'s 49.6 (D), and leads in 3 of 7 scored categories. NOAA National Weather Service API (api.weather.gov) leads on agent ergonomics, security \u0026 auth and payments \u0026 pricing.…", "facts": [ "NOAA National Weather Service API (api.weather.gov) D 49.6", "Weatherbit API C 57.7", "scores" ], "h1": "NOAA National Weather Service API (api.weather.gov) vs Weatherbit API", "image": "https://www.anchorterminal.com/assets/og/compare-nws-api-vs-weatherbit.png", "path": "/compare/nws-api-vs-weatherbit", "published": "2026-10-01", "section": "tools", "title": "NOAA National Weather Service API (api.weather.gov) vs Weatherbit API", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/nws-api-vs-weatherbit" }, "tokens": { "markdown": 2750, "slim": 730 }, "version": 1 }