UK Carbon Intensity vs Weatherstack
Same instrument, two spec sheets — measured, not claimed.
UK Carbon Intensity vs Weatherstack: common questions
Which is more reliable, UK Carbon Intensity or Weatherstack?
Both are neck-and-neck — UK Carbon Intensity and Weatherstack 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 Weatherstack?
Weatherstack has the lower median latency in our checks — UK Carbon Intensity responds in 789 ms versus Weatherstack at 309 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 Weatherstack need an API key?
UK Carbon Intensity needs no key, while Weatherstack requires a free API key. If you want to start calling without signup, reach for UK Carbon Intensity first.
Can I call UK Carbon Intensity and Weatherstack from the browser?
Only UK Carbon Intensity 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 UK Carbon Intensity and Weatherstack free for commercial use?
UK Carbon Intensity allows commercial use on its free tier, 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.