AviationWeather vs Website Carbon
Same instrument, two spec sheets — measured, not claimed.
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 93.1% versus Website Carbon at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, AviationWeather or Website Carbon?
Website Carbon has the lower median latency in our checks — AviationWeather responds in 450 ms versus Website Carbon at 37 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
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.