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AviationWeather vs Meteorologisk Institutt

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

APIAviationWeatherNEW—Meteorologisk InstituttNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useyesyes
Data licensePublic domain (U.S. Government / NOAA)CC BY 4.0 / NLOD (Norwegian Licence for Open Government Data)
Free tierFree, no keyFree, no key; requires identifying User-Agent
Rate limitUnpublished (NWS requests reasonable use)Throttled; identify via User-Agent and respect caching headers (per docs)
In directory since2026-07-052026-07-05
operationalpartialdownno data

AviationWeather vs Meteorologisk Institutt: common questions

Which is more reliable, AviationWeather or Meteorologisk Institutt?

On our scheduled checks, Meteorologisk Institutt leads on measured uptime — AviationWeather at —% versus Meteorologisk Institutt at —% 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 Meteorologisk Institutt need an API key?

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

Can I call AviationWeather and Meteorologisk Institutt from the browser?

Only Meteorologisk Institutt 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 Meteorologisk Institutt free for commercial use?

AviationWeather allows commercial use on its free tier, and Meteorologisk Institutt allows commercial use on its free tier. 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.