Open-Meteo vs Weatherstack
Same instrument, two spec sheets — measured, not claimed.
Open-Meteo vs Weatherstack: common questions
Which is more reliable, Open-Meteo or Weatherstack?
On our scheduled checks, Weatherstack leads on measured uptime — Open-Meteo at 95.1% versus Weatherstack 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, Open-Meteo or Weatherstack?
Weatherstack has the lower median latency in our checks — Open-Meteo responds in 673 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 Open-Meteo and Weatherstack need an API key?
Open-Meteo needs no key, while Weatherstack requires a free API key. If you want to start calling without signup, reach for Open-Meteo first.
Can I call Open-Meteo and Weatherstack from the browser?
Only Open-Meteo 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 Open-Meteo and Weatherstack free for commercial use?
Open-Meteo is personal/non-commercial only, 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.