Study in Focus - Implementation: Ambient Air Quality

Exposure to elevated air pollution levels has substantial negative impacts on human health and the environment. The main pollutants are particulate matter (PM10, PM2.5), nitrogen dioxide (NO2) and ozone (O3). The Ambient Air Quality Directive therefore sets limit and target values for the concentration of air pollutants. Thresholds for particulate matter and nitrogen dioxide are exceeded in several Member States.