Open-Meteo Has a Free Weather API — No Key, No Signup, Real Forecast Data

Most weather APIs hide behind registration walls, throttle free accounts heavily, or charge immediately for anything useful. Open-Meteo is different: completely free, no API key, no account, open-source, and it returns real hourly/daily forecasts. One URL, no auth: https://api.open-meteo.com/v1/forecast?latitude=40.7128&longitude=-74.0060&current=temperature_2m,wind_speed_10m Try it right now: curl "https://api.open-meteo.com/v1/forecast?latitude=40.7128&longitude=-74.0060&current=temperature_2m,wind_speed_10m,relative_humidity_2m,weather_code" Response: { "latitude" : 40.710335 , "longitude" : -73.99235 , "timezone" : "GMT" , "current" : { "time" : "2026-03-26T16:15" , "temperature_2m" : 18.0 , "wind_speed_10m" : 19.0 , "relative_humidity_2m" : 50 , "weather_code" : 0 }, "current_units" : { "temperature_2m" : "°C" , "wind_speed_10m" : "km/h" , "relative_humidity_2m" : "%" , "weather_code" : "wmo code" } } No API key header. No rate limit response. No credit card. How it works: latitud