Open Weather Map

The OpenWeatherMap service provides open current weather and forecast that is available on our web-site for everybody and by API for developers.Ideology of our service is inspired by OpenStreetMap and Wikipedia that make information free and available for everybody. OpenWeatherMap provides wide range of weather data including current weather,forecast, precipitations, wind, clouds, data from weather stations, lots of maps, analytics and many others. We have own model of weather calculation that involves global meteorological broadcast data, own WRF calculation for regions and real-time data from more than 40,000 weather stations.
More information: http://openweathermap.org/