We monitor the air quality of Uusimaa at the monitoring station in Lohja. In addition, another measuring station takes year-long turns in Porvoo, Kerava, Järvenpää and Hyvinkää. In these cities, we measure the concentrations of nitrogen monoxide and dioxide as well as those of particles. Furthermore, we also do mappings of nitrogen dioxide concentrations in nine municipalities of the region.
In Uusimaa, also the abundance and condition of lichens, sensitive to air pollutants, are examined every five years. Read more on the monitoring programme.
We compile together annually the emission data of traffic, industry and energy production in the area.
We monitor the air quality in Uusimaa in cooperation with the municipalities and the Uusimaa Centre for Economic Development, Transport and the Environment. The Uusimaa ELY-Centre publishes the monitoring results and the evaluation of the development of air quality in the Uusimaa region.