Groundhog Day API vs US Weather
Same instrument, two spec sheets — measured, not claimed.
Groundhog Day API vs US Weather: common questions
Which is more reliable, Groundhog Day API or US Weather?
Both are neck-and-neck — Groundhog Day API 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, Groundhog Day API or US Weather?
US Weather has the lower median latency in our checks — Groundhog Day API responds in 262 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 Groundhog Day API and US Weather need an API key?
Neither needs a paid key — Groundhog Day API 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 Groundhog Day API and US Weather from the browser?
Yes — both Groundhog Day API 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 Groundhog Day API and US Weather free for commercial use?
Groundhog Day API 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.