Open-Meteo Has a Free API — Get Weather Data for Any Location Without an API Key

Weather data is one of the most common API needs — from dashboards to travel apps to IoT projects. But most weather APIs require registration, API keys, and have restrictive free tiers. Open-Meteo is completely free, open-source, and requires no API key. Just send a request and get weather data. What You Get One HTTP request returns: Current temperature, wind speed, wind direction Hourly forecasts (up to 16 days) Daily min/max temperature, precipitation, sunrise/sunset Historical weather data (back to 1940) Air quality index Marine and flood forecasts Try It Right Now curl "https://api.open-meteo.com/v1/forecast?latitude=52.52&longitude=13.41&current_weather=true" Response: { "latitude" : 52.52 , "longitude" : 13.42 , "current_weather" : { "temperature" : 15.3 , "windspeed" : 12.4 , "winddirection" : 210 , "weathercode" : 3 , "is_day" : 1 , "time" : "2026-03-26T10:00" } } That's Berlin right now — 15.3°C with moderate wind. No key needed. Python Example: 7-Day Forecast import requests