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Glax Weather API vs Website Carbon

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

APIGlax Weather APINEW—Website CarbonNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree keyless byte-based /data endpoint
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Glax Weather API vs Website Carbon: common questions

Which is more reliable, Glax Weather API or Website Carbon?

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

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

Can I call Glax Weather API and Website Carbon from the browser?

Neither sends browser-friendly CORS headers reliably, so call Glax Weather API and Website Carbon 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 Website Carbon free for commercial use?

Glax Weather API has unclear commercial terms, and Website Carbon 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.