Open-Meteo: The Best Free Weather API (No Key, Global Coverage)

Open-Meteo provides weather forecasts for any location — free, no API key, 16-day forecasts.

Quick Start

https://api.open-meteo.com/v1/forecast?latitude=52.52&longitude=13.41&daily=temperature_2m_max,temperature_2m_min,precipitation_sum&timezone=auto

What You Get

• Temperature (min/max)


• Precipitation (rain, snow)


• Wind speed and direction


• UV index


• Sunrise/sunset


• Hourly data available

Why Open-Meteo?

• 
  Free — no API key, no signup


• 
  Global — any coordinates worldwide


• 
  16-day forecast — vs 5 days from most free APIs


• 
  Historical data — past weather available


• 
  Fast — typically under 100ms response

I built a Weather Scraper that wraps this with city name geocoding — just enter city names instead of coordinates.

Free on Apify Store — search knotless_cadence weather.