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Automatic Weather Stations vs UK Carbon Intensity

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

APIAutomatic Weather StationsHEALTHY87UK Carbon IntensityHEALTHY70
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms986789
P95 · ms19491948
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedCC BY 4.0 (per API docs)
Free tierFree — limits not publishedFree — no API key
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Automatic Weather Stations vs UK Carbon Intensity: common questions

Which is more reliable, Automatic Weather Stations or UK Carbon Intensity?

Both are neck-and-neck — Automatic Weather Stations and UK Carbon Intensity each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Automatic Weather Stations or UK Carbon Intensity?

UK Carbon Intensity has the lower median latency in our checks — Automatic Weather Stations responds in 986 ms versus UK Carbon Intensity at 789 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Automatic Weather Stations and UK Carbon Intensity need an API key?

Neither needs a paid key — Automatic Weather Stations is callable with no signup, and UK Carbon Intensity is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Automatic Weather Stations and UK Carbon Intensity from the browser?

Yes — both Automatic Weather Stations and UK Carbon Intensity send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Automatic Weather Stations and UK Carbon Intensity free for commercial use?

Automatic Weather Stations has unclear commercial terms, and UK Carbon Intensity allows commercial use on its free tier. 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.