openSenseMap vs wttr.in
Same instrument, two spec sheets — measured, not claimed.
openSenseMap vs wttr.in: common questions
Which is more reliable, openSenseMap or wttr.in?
On our scheduled checks, wttr.in leads on measured uptime — openSenseMap at —% versus wttr.in 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 openSenseMap and wttr.in need an API key?
Neither needs a paid key — openSenseMap is callable with no signup, and wttr.in is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call openSenseMap and wttr.in from the browser?
Yes — both openSenseMap and wttr.in 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 wttr.in free for commercial use?
openSenseMap has unclear commercial terms, and wttr.in 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.