All official European Union website addresses are in the europa.eu domain.
See all EU institutions and bodies
An official website of the European Union | How do you know?
Environmental information systems
EN
All official European Union website addresses are in the europa.eu domain.
See all EU institutions and bodiesInfographic (static)
Abbreviations: PM2.5 = particulate matter with a diameter under 2.5 micrometres; PM10 = particulate matter with a diameter under 10 micrometres; NO2 = nitrogen dioxide; O3 = ozone; CO = carbon monoxide; SO2 = sulphur dioxide.