AviationWeather.gov Data API

AviationWeather.gov Data API

NOAA's National Weather Service Aviation Weather Center serves METARs, TAFs, SIGMETs, pilot reports and other aviation weather over a keyless API. The docs say: "This service facilitates machine-to-machine access to aviation weather information."

Coverage

By product, as the docs list coverage: METAR terminal observations and TAF terminal forecasts (worldwide), SIGMET aviation warnings (worldwide), PIREPs/AIREPs ("Primarily US and North Atlantic"), G-AIRMETs ("Contiguous 48 United States"), AIRMETs (Alaska), area forecasts (Alaska), area forecast discussions, center weather advisories and meteorological impact statements (United States), the TFM Convective Forecast ("United States, portions of Canada"), and station, airport and navigation-feature information (worldwide). Formats vary by product across raw text, JSON, GeoJSON, CSV, XML and IWXXM. History: "The weather database currently allows access to up to the previous 30 days of data." Gzipped cache files of the current full datasets are updated once a minute (the stations listing once a day).

Verdict

Keyless aviation weather from NOAA's Aviation Weather Center: METARs, TAFs, SIGMETs, PIREPs and more as text, JSON, GeoJSON, CSV, XML and IWXXM. Recorded as Custom because the terms are the NWS public-domain statement rather than a licence id: "The information on National Weather Service (NWS) Web pages are in the public domain, unless specifically noted otherwise, and may be used without charge for any lawful purpose so long as you do not: 1) claim it is your own (e.g., by claiming copyright for NWS information -- see below), 2) use it in a manner that implies an endorsement or affiliation with NOAA/NWS, or 3) modify its content and then present it as official government material." Rate limited: "All requests are rate limited to 100 requests per minute. Most endpoints return a maximum of 400 entries (please consider using cache files for larger requests)." The docs also say "Cross-origin resource sharing is not permitted at this time." and ask you to "Set a custom user agent to prevent automated filtering inadvertently blocking valid traffic." Distinct from nws-api (api.weather.gov) and faa-nas-status-api. Signal Lab links only.