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Danish data service Energi vs Weather Underground API

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

APIDanish data service EnergiNEW—Weather Underground APIREACHABLE—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no API keyFree tier — API key may be required for production
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Danish data service Energi vs Weather Underground API: common questions

Which is more reliable, Danish data service Energi or Weather Underground API?

On our scheduled checks, Weather Underground API leads on measured uptime — Danish data service Energi at —% versus Weather Underground API 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 Danish data service Energi and Weather Underground API need an API key?

Danish data service Energi needs no key, while Weather Underground API requires a free API key. If you want to start calling without signup, reach for Danish data service Energi first.

Can I call Danish data service Energi and Weather Underground API from the browser?

Only Weather Underground API is browser-friendly — it returns CORS headers over HTTPS. Danish data service Energi needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Danish data service Energi and Weather Underground API free for commercial use?

Danish data service Energi has unclear commercial terms, and Weather Underground API 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.