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Aare.guru API vs Weatherstack

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

APIAare.guru APINEW—WeatherstackNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
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

Aare.guru API vs Weatherstack: common questions

Which is more reliable, Aare.guru API or Weatherstack?

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

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

Can I call Aare.guru API and Weatherstack from the browser?

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

Are Aare.guru API and Weatherstack free for commercial use?

Aare.guru 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.