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Glax Weather API vs Weatherstack

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

APIGlax Weather APINEW—WeatherstackNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Glax Weather API vs Weatherstack: common questions

Which is more reliable, Glax Weather API or Weatherstack?

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

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

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

Neither sends browser-friendly CORS headers reliably, so call Glax Weather API and Weatherstack from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Glax Weather API and Weatherstack free for commercial use?

Glax Weather API has unclear commercial terms, and Weatherstack 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.