Weather · head-to-head
AviationWeather vs US Weather
The legacy Text Data Server referenced by the original dataserver URL has been discontinued and replaced by the new Aviation Weather Center Data API, reachable at aviationweather.gov/data/api. It serves worldwide METAR/TAF, US/North-Atlantic PIREPs, global SIGMETs, and CONUS G-AIRMETs (which replaced text AIRMETs in January 2025) in raw text, JSON, GeoJSON, CSV, XML, or IWXXM, with no authentication but a 100-requests/minute rate limit.
The National Weather Service API serves official US government forecasts, active alerts, and observation-station data as GeoJSON and JSON-LD feeds, with no signup or API key required. It's widely used by third-party weather apps and accepts direct browser calls, though it requires a descriptive User-Agent header identifying your application on every request.
| AviationWeather | US Weather | |
|---|---|---|
| Authentication | None | None |
| Pricing | free | free |
| Formats | JSON, GeoJSON, XML, CSV, Text | GeoJSON, JSON-LD, CAP/XML, DWML/XML, ATOM |
| CORS | no | yes |
| HTTPS | Yes | Yes |
US Weather supports CORS, while AviationWeather doesn't — pick US Weather for direct browser calls.