All official European Union website addresses are in the europa.eu domain.
Infographic (static)Published 30 Apr 2026Modified 28 Apr 2026
CH4: methane; NMVOC: non-methane volatile organic compound; NO: nitric oxide; NO2: nitrogen dioxide; O: excited-state oxygen atom; O2: oxygen; O3: ozone; VOC: volatile organic compound; WHO: World Health Organization.
