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