The National Air Pollution Monitoring Network (NABEL) and cantonal and urban monitoring networks provide information on current concentrations of the principal pollutants.
Ozone-trends for 31.05.2023: West ⬂ , East ⇨ , South ⬂
Further information
The procedure followed does not allow interpretations at small scale. As a result, concentrations may locally be higher or lower than the mean values shown on the maps.
