Topics | Umweltbundesamt

The index is based on a health-related assessment of hourly mean ozone and nitrogen dioxide values and of hourly moving PM10 and PM2.5 daily mean values. For calculating the index, at least one of the four pollutants has to be measured at a station. The lack of measurements of at least one pollutant at a station is indicated by an incomplete circle: The index is based on all four poll... read more