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Free UV Index API vs Solematica

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

APIFree UV Index APINEW—SolematicaNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree public /providers endpoint; other endpoints need paid credits
Rate limitUnpublished100 req/window · 99 remaining · resets 900
In directory since2026-07-052026-07-05
operationalpartialdownno data

Free UV Index API vs Solematica: common questions

Which is more reliable, Free UV Index API or Solematica?

On our scheduled checks, Solematica leads on measured uptime — Free UV Index API at —% versus Solematica 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 Free UV Index API and Solematica need an API key?

Neither needs a paid key — Free UV Index API is callable with no signup, and Solematica is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Free UV Index API and Solematica from the browser?

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

Are Free UV Index API and Solematica free for commercial use?

Free UV Index API has unclear commercial terms, and Solematica 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.