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AviationWeather vs Open-Meteo Archive

Same instrument, two spec sheets — measured, not claimed.

APIAviationWeatherHEALTHY64Open-Meteo ArchiveDEAD0
Uptime · 30d
Uptime · 90d93.1%0.0%
Uptime · 30d91.7%0.0%
P50 · ms450—
P95 · ms4734—
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licensePublic domain (U.S. Government / NOAA)Unverified
Free tierFree, no keyFree — limits not published
Rate limitUnpublished (NWS requests reasonable use)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

AviationWeather vs Open-Meteo Archive: common questions

Which is more reliable, AviationWeather or Open-Meteo Archive?

On our scheduled checks, AviationWeather leads on measured uptime — AviationWeather at 93.1% versus Open-Meteo Archive at 0.0% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do AviationWeather and Open-Meteo Archive need an API key?

Neither needs a paid key — AviationWeather is callable with no signup, and Open-Meteo Archive is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call AviationWeather and Open-Meteo Archive from the browser?

Only Open-Meteo Archive is browser-friendly — it returns CORS headers over HTTPS. AviationWeather needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are AviationWeather and Open-Meteo Archive free for commercial use?

AviationWeather allows commercial use on its free tier, and Open-Meteo Archive has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.