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AQICN vs IPMA

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

APIAQICNREACHABLE—IPMANEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSnoyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedIPMA open data (attribution 'Fonte: IPMA' expected)
Free tierFree tier — API key requiredFree, no key
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

AQICN vs IPMA: common questions

Which is more reliable, AQICN or IPMA?

On our scheduled checks, IPMA leads on measured uptime — AQICN at —% versus IPMA 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 IPMA need an API key?

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

Can I call AQICN and IPMA from the browser?

Only IPMA 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 IPMA free for commercial use?

AQICN has unclear commercial terms, and IPMA 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.