Parks cool areas of Madrid

The left image shows the air temperature for Madrid on 25 June 2008 at 22:18 UTC. The difference between the minimum and maximum temperatures in the colour legend is 6°C. The right image shows the sealed soil surfaces percentage (provided by the European Environmental Agency). The position of the Retiro Park is at the centre of the small rectangle, and shows an almost non-existent heat island at this time of the day. This demonstrates the important role that parks play in cooling city centres at night.