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ColorfulClouds vs Weatherstack

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

APIColorfulCloudsREACHABLE—WeatherstackNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ColorfulClouds vs Weatherstack: common questions

Which is more reliable, ColorfulClouds or Weatherstack?

On our scheduled checks, Weatherstack leads on measured uptime — ColorfulClouds 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 ColorfulClouds and Weatherstack need an API key?

Both ask you to authenticate — ColorfulClouds uses an API key and Weatherstack uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call ColorfulClouds and Weatherstack from the browser?

Neither sends browser-friendly CORS headers reliably, so call ColorfulClouds 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 ColorfulClouds and Weatherstack free for commercial use?

ColorfulClouds 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.