Glax Weather API vs PM2.5 Open Data Portal
Same instrument, two spec sheets — measured, not claimed.
Glax Weather API vs PM2.5 Open Data Portal: common questions
Which is more reliable, Glax Weather API or PM2.5 Open Data Portal?
Both are neck-and-neck — Glax Weather API and PM2.5 Open Data Portal each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.
Which is faster, Glax Weather API or PM2.5 Open Data Portal?
PM2.5 Open Data Portal has the lower median latency in our checks — Glax Weather API responds in 1004 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 Glax Weather API and PM2.5 Open Data Portal need an API key?
Neither needs a paid key — Glax Weather API 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 Glax Weather API and PM2.5 Open Data Portal from the browser?
Neither sends browser-friendly CORS headers reliably, so call Glax Weather API 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 Glax Weather API and PM2.5 Open Data Portal free for commercial use?
Glax Weather API has unclear commercial terms, 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.