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AQICN vs Open-Meteo Archive

Same instrument, two spec sheets — measured, not claimed.

APIAQICNREACHABLE—Open-Meteo ArchiveNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSnoyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

AQICN vs Open-Meteo Archive: common questions

Which is more reliable, AQICN or Open-Meteo Archive?

On our scheduled checks, Open-Meteo Archive leads on measured uptime — AQICN at —% versus Open-Meteo Archive at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do AQICN and Open-Meteo Archive need an API key?

Open-Meteo Archive needs no key, while AQICN requires a free API key. If you want to start calling without signup, reach for Open-Meteo Archive first.

Can I call AQICN and Open-Meteo Archive from the browser?

Only Open-Meteo Archive 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 Archive free for commercial use?

AQICN has unclear commercial terms, and Open-Meteo Archive 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.