How good is the air? Our air quality index shows you. It's based on hourly average measurements of ozone (O3), nitrogen dioxide (NO2), particulate matter (PM10 and PM2.5), and sulfur dioxide (SO2). Using the most recent hourly data from a station, pollutant concentrations are classified into five index categories from "very good" to "very poor" using threshold values. AQI class PM1... read more
Luftqualität
Air
Nickel in particulate matter
Nickel belongs to the heavy metals and usually occurs bound to other substances. In ambient air arsenic is measured bound to particulate matter. read more
Health
Newsletter WHO CC Air Hygiene
Until 2018 the WHO Collaborating Center for Air Quality Management and Air Pollution Control published news about air quality of the member states of the WHO Region for Europe. read more
Air
Benzo(a)pyrene in particulate matter
Benzo(a)pyrene is a polycyclic aromatic hydrocarbon. It is used as a marker for the carcinogenic risk of polycyclic aromatic hydrocarbons in ambient air. read more
Health
WHO CC Air Hygiene Report
The Air Hygiene Report informs on various air hygiene issues in the WHO Region for Europe. read more
News on Air
Air quality 2014: Nitrogen dioxide now ranks as pollutant Nr. 1
Wood-fired heating systems emit more particulate matter locally than road traffic read more
