UK Carbon Intensity vs US Weather
Same instrument, two spec sheets — measured, not claimed.
UK Carbon Intensity vs US Weather: common questions
Which is more reliable, UK Carbon Intensity or US Weather?
Both are neck-and-neck — UK Carbon Intensity and US Weather 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, UK Carbon Intensity or US Weather?
US Weather has the lower median latency in our checks — UK Carbon Intensity responds in 789 ms versus US Weather at 223 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 UK Carbon Intensity and US Weather need an API key?
Neither needs a paid key — UK Carbon Intensity is callable with no signup, and US Weather is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call UK Carbon Intensity and US Weather from the browser?
Yes — both UK Carbon Intensity and US Weather 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 UK Carbon Intensity and US Weather free for commercial use?
UK Carbon Intensity allows commercial use on its free tier, and US Weather 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.