Air quality in Switzerland has improved steadily since the mid-1980s. Nevertheless, the concentrations of ozone (O3) exceed the ambient limit values over a large area, of particulate matter PM10 and PM2.5 at several locations and of nitrogen dioxide (NO2) at individual locations close to traffic. The scale of ammonia (NH3) pollution is also far in excess of the critical limit value.
Real time and historical data
Last modification 18.06.2021