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ColorfulClouds vs Sunrise-Sunset

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

APIColorfulCloudsDEAD0Sunrise-SunsetHEALTHY97
Uptime · 30d
Uptime · 90d0.0%99.02%
Uptime · 30d0.0%98.3%
P50 · ms—204
P95 · ms—2206
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedn/a
Free tierFree tier — API key requiredUnlimited, attribution requested
Rate limitUnpublishedNo burst traffic
In directory since2026-07-052026-06-22
operationalpartialdownno data

ColorfulClouds vs Sunrise-Sunset: common questions

Which is more reliable, ColorfulClouds or Sunrise-Sunset?

On our scheduled checks, Sunrise-Sunset leads on measured uptime — ColorfulClouds at 0.0% versus Sunrise-Sunset at 99.02% 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 ColorfulClouds and Sunrise-Sunset need an API key?

Sunrise-Sunset needs no key, while ColorfulClouds requires a free API key. If you want to start calling without signup, reach for Sunrise-Sunset first.

Can I call ColorfulClouds and Sunrise-Sunset from the browser?

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

Are ColorfulClouds and Sunrise-Sunset free for commercial use?

ColorfulClouds has unclear commercial terms, and Sunrise-Sunset 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.