Public APIs about Weather

Weather, especially for Astroweather

Weather

Weather

Weather and climate data

Weather and climate data

Weather and weather webcams

Real-time UV Index Forecast

Weather

Global marine weather from multiple sources

Weather

Weather

Weather

Data from Personal Weather Stations called senseBoxes

Forecast models from meteorological institutes

A RESTful free API to check the weather

Location-based weather data

Weather

Weather

Global weather and climate data

Global historical and weather forecast data

Weather and forecast data

NOAA aviation weather forecasts and observations

Real-Time & Historical World Weather Data API

Realtime weather readings for Singapore area including other weather parameters

:partly_sunny: The right way to check the weather

Provide weather information, earthquake information, and climate data

Global weather forecast API for non-commercial use

Weather API Powered by Proprietary Technology

US National Weather Service

Weather API with other stuff like Astronomy and Geolocation API

Air Quality Index Data for over 1000 cities

Assesses weather condition in specific locations

Weather and forecast data from Spain

Real time weather forecasts and historic data

Meteorological data of the Basque Country

Radar data collected from different websites across the Internet

Weather API from Yahoo