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AQICN vs NDBC Buoy Data API

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

APIAQICNREACHABLE—NDBC Buoy Data APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesno
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 NDBC Buoy Data API: common questions

Which is more reliable, AQICN or NDBC Buoy Data API?

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

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

Can I call AQICN and NDBC Buoy Data API from the browser?

Neither sends browser-friendly CORS headers reliably, so call AQICN and NDBC Buoy Data API 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 NDBC Buoy Data API free for commercial use?

AQICN has unclear commercial terms, and NDBC Buoy Data API 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.