DzU article from 02.07.2025 | Last changed: 03.07.2025
Indicator: Air quality in agglomerations
… higher. The situation for NO₂ and PM2.5 has improved considerably since 2000, but the WHO recommendations for 2021 are still clearly exceeded. Ozone and … background from WHO guideline values, respectively. Assessing the development Since 2000, pollution from nitrogen dioxide and particulate matter has fallen … higher. The situation for NO₂ and PM2.5 has improved considerably since 2000, but the WHO recommendations for 2021 are still clearly exceeded. Ozone and …