shipapis
StarSubmit an APISubmit API

AviationWeather vs Website Carbon

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

APIAviationWeatherNEW—Website CarbonNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licensePublic domain (U.S. Government / NOAA)Unverified
Free tierFree, no keyFree keyless byte-based /data endpoint
Rate limitUnpublished (NWS requests reasonable use)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

AviationWeather vs Website Carbon: common questions

Which is more reliable, AviationWeather or Website Carbon?

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

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

Can I call AviationWeather and Website Carbon from the browser?

Neither sends browser-friendly CORS headers reliably, so call AviationWeather and Website Carbon from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are AviationWeather and Website Carbon free for commercial use?

AviationWeather allows commercial use on its free tier, and Website Carbon 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.