AQICN vs Open-Meteo
Same instrument, two spec sheets — measured, not claimed.
AQICN vs Open-Meteo: common questions
Which is more reliable, AQICN or Open-Meteo?
On our scheduled checks, AQICN leads on measured uptime — AQICN at 100% versus Open-Meteo at 96.6% 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, AQICN or Open-Meteo?
AQICN has the lower median latency in our checks — AQICN responds in 267 ms versus Open-Meteo at 274 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 Open-Meteo need an API key?
Open-Meteo needs no key, while AQICN requires a free API key. If you want to start calling without signup, reach for Open-Meteo first.
Can I call AQICN and Open-Meteo from the browser?
Only Open-Meteo is browser-friendly — it returns CORS headers over HTTPS. AQICN needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are AQICN and Open-Meteo free for commercial use?
AQICN has unclear commercial terms, and Open-Meteo is personal/non-commercial only. 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.