AQICN vs DFlight API
Same instrument, two spec sheets — measured, not claimed.
AQICN vs DFlight API: common questions
Which is more reliable, AQICN or DFlight API?
On our scheduled checks, AQICN leads on measured uptime — AQICN at 100% versus DFlight API at 11.8% 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 DFlight API?
AQICN has the lower median latency in our checks — AQICN responds in 224 ms versus DFlight API at 319 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 DFlight API need an API key?
DFlight API needs no key, while AQICN requires a free API key. If you want to start calling without signup, reach for DFlight API first.
Can I call AQICN and DFlight API from the browser?
Neither sends browser-friendly CORS headers reliably, so call AQICN and DFlight 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 DFlight API free for commercial use?
AQICN has unclear commercial terms, and DFlight 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.