Dev Tip – OpenWeatherMap – free weather data and forecast API

The OpenWeatherMap service provides free weather data and forecast API suitable for any cartographic services like web and smartphones applications. Ideology is inspired by OpenStreetMap and Wikipedia that make information free and available for everybody. OpenWeatherMap provides wide range of weather data such as map with current weather, week forecast, precipitation, wind, clouds, data from weather Stations and many others. Weather data is received from global Meteorological broadcast services and more than 40 000 weather stations.


For mobile apps developers

You can receive any weather data for your application by using JSON / XML API. Lots of applications for Android and iOS use OpenWeatherMap as weather data source. By the way the data can be received from WMS server and can be embedded into any cartographic web-application.

For web developers

If you use some cartographic services in your web-sites now you can easily add weather information to it. By the way the Drupal and other CMS plug-ins are available. We can offer you libraries for OpenStreetMaps, Google and Yandex maps. We support integration with libraries for OpenLayers and Leaflet.

  • Put the city’s name or its part and get the list of the most proper cities in the world. Example – Lon or Lond or London. The more precise city name you put the more precise list you will get.
  • To make it more precise put the city’s name or its part, comma, the name of the county or 2-letter country code. You will get all proper cities in chosen county. The order is important – the first is city name than comma than county.


From OpenWeathermap

We are open for partnership – OpenWeatherMap is startup that offers free current weather data, forecasts and history data to the developers of web-services and mobile applications. We are seeking for investments to develop the OpenWeatherMap project in direction of data base increasing, new services development, and math algorithm enforcement.