Weather · head-to-head
7Timer! vs AviationWeather
7Timer! generates numerical weather forecasts from NOAA/NCEP's Global Forecast System across roughly 1.5 million global grid points, refreshed four times daily. Beyond standard meteorological fields (cloud cover, temperature, wind, precipitation), it produces astronomy-specific products like "astro seeing" and atmospheric transparency for stargazing/observation planning, with forecast ranges from 3 days (ASTRO) up to a 9-16 day overview product.
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.
| 7Timer! | AviationWeather | |
|---|---|---|
| Authentication | None | None |
| Pricing | free | free |
| Formats | JSON, XML, PNG | JSON, GeoJSON, XML, CSV, Text |
| CORS | no | no |
| HTTPS | No | Yes |
AviationWeather supports 5 response formats, while 7Timer! offers fewer — pick AviationWeather for more integration flexibility.