Best Free Weather APIsfor Developers in 2026
A curated list of the 31 best free weather APIs available today. Every API is verified, documented, and ready to integrate into your project.
All Free Weather APIs
Browse Weather category →7Timer!
Weather, especially for Astroweather
AccuWeather
Weather and forecast data
Aemet
Weather and forecast data from Spain
apilayer weatherstack
Real-Time & Historical World Weather Data API
APIXU
Weather
AQICN
Air Quality Index Data for over 1000 cities
AviationWeather
NOAA aviation weather forecasts and observations
ColorfulClouds
Weather
Euskalmet
Meteorological data of the Basque Country
Foreca
Weather
HG Weather
Provides weather forecast data for cities in Brazil
Hong Kong Obervatory
Provide weather information, earthquake information, and climate data
MetaWeather
Weather
Meteorologisk Institutt
Weather and climate data
Micro Weather
Real time weather forecasts and historic data
ODWeather
Weather and weather webcams
Oikolab
70+ years of global, hourly historical and forecast weather data from NOAA and ECMWF
Open-Meteo
Global weather forecast API for non-commercial use
openSenseMap
Data from Personal Weather Stations called senseBoxes
OpenUV
Real-time UV Index Forecast
OpenWeatherMap
Weather
QWeather
Location-based weather data
RainViewer
Radar data collected from different websites across the Internet
Storm Glass
Global marine weather from multiple sources
Tomorrow
Weather API Powered by Proprietary Technology
US Weather
US National Weather Service
Visual Crossing
Global historical and weather forecast data
weather-api
A RESTful free API to check the weather
WeatherAPI
Weather API with other stuff like Astronomy and Geolocation API
Weatherbit
Weather
Yandex.Weather
Assesses weather condition in specific locations
Why Use Free Weather APIs?
Fast Integration
Skip building from scratch. Integrate a production-ready weather API in minutes with a single HTTP request.
Zero Cost to Start
All 31 weather APIs listed here offer a free tier — perfect for prototypes, side projects, and learning.
Verified & Documented
Every API includes auth type, HTTPS support, CORS status, and a direct link to official documentation.
Frequently Asked Questions
What are the best free weather APIs?
The best free weather APIs include 7Timer!, AccuWeather, Aemet and more. All 31 options are listed above with full details.
Are these weather APIs really free?
Yes. Every weatherAPI on this list offers a free tier. Some require a free API key or have rate limits — each API's detail page shows the full specification.
Do these weather APIs support CORS?
10 out of 31 weather APIs support CORS, which allows requests directly from a browser. CORS status is shown on every API card and detail page.
How do I choose the right weather API?
Consider authentication requirements (None, API Key, or OAuth), CORS support for browser requests, rate limits for your volume, and HTTPS support. Click any API above to see its full specification and documentation link.
Looking for APIs in other categories?
Browse hundreds of free APIs across Weather, Finance, Social, Entertainment, and more.