AQICN vs PM2.5 Open Data Portal
Same instrument, two spec sheets — measured, not claimed.
AQICN vs PM2.5 Open Data Portal: common questions
Which is more reliable, AQICN or PM2.5 Open Data Portal?
Both are neck-and-neck — AQICN 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, AQICN or PM2.5 Open Data Portal?
AQICN has the lower median latency in our checks — AQICN responds in 224 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 AQICN and PM2.5 Open Data Portal need an API key?
PM2.5 Open Data Portal needs no key, while AQICN requires a free API key. If you want to start calling without signup, reach for PM2.5 Open Data Portal first.
Can I call AQICN and PM2.5 Open Data Portal from the browser?
Neither sends browser-friendly CORS headers reliably, so call AQICN 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 AQICN and PM2.5 Open Data Portal free for commercial use?
AQICN 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.