We are living in an amazing time. Something that seemed to be very difficult in the past now becomes affordable and simple. The tasks for which it was necessary to create research institutes and large organizations now are solved by self-organized groups of enthusiasts. Enthusiasts create maps and encyclopedias, make movies and develop software. I want to tell you about the area in which this fresh wind of change is still not blowing in full force – it is the weather. And we want to change that by our project – OpenWeatherMap!


Heat maes the density of location of meteorological stations in the world. 