In this item, all the existing variables that measure the state of the environment in which one lives are taken, in order to establish its evolution over time.

Air pollution

This variable is measured by the following cities: Madrid, Barcelona, Valencia, Seville and Murcia, unfortunately they do not share the same data collection methodology, which makes it impossible to compare them. To find the evolution over time of this variable by city, go to Management evolution by city.

Noise pollution

This variable is only measured by the city of, Madrid and Valencia, unfortunately they do not share the same data collection methodology, which makes it impossible to compare them. To find the evolution over time of this variable by city, go to Management evolution by city.