openSenseMap vs US Weather
Same instrument, two spec sheets — measured, not claimed.
openSenseMap vs US Weather: common questions
Which is more reliable, openSenseMap or US Weather?
On our scheduled checks, US Weather leads on measured uptime — openSenseMap at 90.2% versus US Weather at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, openSenseMap or US Weather?
US Weather has the lower median latency in our checks — openSenseMap responds in 655 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 openSenseMap and US Weather need an API key?
Neither needs a paid key — openSenseMap 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 openSenseMap and US Weather from the browser?
Yes — both openSenseMap 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 openSenseMap and US Weather free for commercial use?
openSenseMap has unclear commercial terms, 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.