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Glax Weather API vs US Weather

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

APIGlax Weather APINEW—US WeatherNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedU.S. Government work / public domain
Free tierFree — limits not publishedFree (US Government public data)
Rate limitUnpublishedUnpublished (asks for a User-Agent identifying your app)
In directory since2026-07-052026-07-05
operationalpartialdownno data

Glax Weather API vs US Weather: common questions

Which is more reliable, Glax Weather API or US Weather?

On our scheduled checks, US Weather leads on measured uptime — Glax Weather API at —% versus US Weather 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 Glax Weather API and US Weather need an API key?

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

Can I call Glax Weather API and US Weather from the browser?

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

Are Glax Weather API and US Weather free for commercial use?

Glax Weather API has unclear commercial terms, and US Weather allows commercial use on its free tier. 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.