AviationWeather vs PM2.5 Open Data Portal
Same instrument, two spec sheets — measured, not claimed.
AviationWeather vs PM2.5 Open Data Portal: common questions
Which is more reliable, AviationWeather or PM2.5 Open Data Portal?
On our scheduled checks, PM2.5 Open Data Portal leads on measured uptime — AviationWeather at 93.1% versus PM2.5 Open Data Portal 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 PM2.5 Open Data Portal?
AviationWeather has the lower median latency in our checks — AviationWeather responds in 450 ms versus PM2.5 Open Data Portal at 796 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 PM2.5 Open Data Portal need an API key?
Neither needs a paid key — AviationWeather is callable with no signup, and PM2.5 Open Data Portal is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call AviationWeather and PM2.5 Open Data Portal from the browser?
Neither sends browser-friendly CORS headers reliably, so call AviationWeather and PM2.5 Open Data Portal 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 PM2.5 Open Data Portal free for commercial use?
AviationWeather allows commercial use on its free tier, and PM2.5 Open Data Portal 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.