Best Free Weather APIs for Developers
16-day forecasts, real-time temperature, wind vectors, and meteorological radar models across verified public providers.
Overview & Comparison Matrix
14 Endpoints| API Name | Category | Auth Status | Rate Limit | Action |
|---|---|---|---|---|
| Open-Meteo | weather | No Key | Sınırsız | View API |
| OpenWeatherMap | weather | Free Key | 1000 çağrı/gün | View API |
| WeatherAPI | weather | Free Key | 1M çağrı/ay | View API |
| Visual Crossing | weather | Free Key | 1000 çağrı/gün | View API |
| Tomorrow.io | weather | Free Key | 500 çağrı/gün | View API |
| Meteostat | weather | Free Key | Değişken | View API |
| AccuWeather | weather | Free Key | 50 çağrı/gün | View API |
| Weatherbit | weather | Free Key | 500 çağrı/gün | View API |
| Weatherstack | weather | Free Key | 250 istek/ay | View API |
| World Weather Online | weather | Free Key | 500 çağrı/gün | View API |
All Verified Endpoints(14 / 14)
Open-Meteo
Zero authentication required, completely free, 16-day forecast, unlimited requests
OpenWeatherMap
7-day weather forecast, current conditions, and historical records
WeatherAPI
Comprehensive real-time weather and astronomical datasets
Visual Crossing
50-year historical weather records and global meteorological forecasts
Tomorrow.io
Advanced hyperlocal weather intelligence, wind vectors, and alert feeds
Meteostat
Open meteorological historical weather data archive and climate trends
AccuWeather
Enterprise-grade weather forecasts and high-resolution radar feeds
Weatherbit
High-resolution historical and current weather and solar telemetry
Weatherstack
Real-time global weather and geolocation lookup engine
World Weather Online
Global worldwide weather, marine, and ski resort forecasting
NOAA (ABD Hava Servisi)
Official US National Weather Service open API, zero key needed
Yr.no (Norveç)
Norwegian Meteorological Institute open public weather feeds
AirVisual
Global real-time air quality index (AQI) and pollution sensor datasets
Frequently Asked Questions & Developer Guide
Which free weather API requires no API key?
Open-Meteo operates completely keyless with zero authentication. It exposes 16-day forecasts, hourly historical weather, and elevation data.
Which weather API provides the largest free monthly quota?
WeatherAPI offers 1,000,000 requests per month on its free developer plan upon sign-up.
Can I fetch weather data directly from browser client code?
Yes, all listed endpoints support HTTPS and CORS headers, or can be proxied through FreeAPI Edge Gateway with high-speed memory caching.