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Automatic Weather Stations vs DFlight API

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

APIAutomatic Weather StationsHEALTHY87DFlight APIDEAD0
Uptime · 30d
Uptime · 90d100%11.8%
Uptime · 30d100%0.0%
P50 · ms986319
P95 · ms1949668
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Automatic Weather Stations vs DFlight API: common questions

Which is more reliable, Automatic Weather Stations or DFlight API?

On our scheduled checks, Automatic Weather Stations leads on measured uptime — Automatic Weather Stations 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, Automatic Weather Stations or DFlight API?

DFlight API has the lower median latency in our checks — Automatic Weather Stations responds in 986 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 Automatic Weather Stations and DFlight API need an API key?

Neither needs a paid key — Automatic Weather Stations is callable with no signup, and DFlight API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Automatic Weather Stations and DFlight API from the browser?

Only Automatic Weather Stations is browser-friendly — it returns CORS headers over HTTPS. DFlight API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Automatic Weather Stations and DFlight API free for commercial use?

Automatic Weather Stations 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.