2017-2025
World's most polluted cities
The most polluted cities according to data aggregated from over 80,000 data points.
2025
World Air Quality Report
2025
World Air Quality Report
| Rank | City | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1905 |  Clermont Ferrand France | 7 | 6.5 | 7.9 | 11.6 | 9.1 | 8.5 | 8.6 | 9.6 | 11.1 |
| 1906 |  Oberursel Germany | 7 | 6.3 | -- | -- | -- | -- | -- | -- | -- |
| 1907 | Zierenberg Germany | 7 | 6.4 | 5.8 | 7.9 | 7.1 | -- | -- | -- | -- |
| 1908 | Frechen Germany | 7 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1909 |  Sitia Greece | 7 | 7 | 13.9 | 17.7 | -- | -- | -- | -- | -- |
| 1910 |  Galway Ireland | 7 | 7 | 3.6 | -- | -- | -- | -- | -- | -- |
| 1911 | Celbridge Ireland | 7 | 6.8 | 5.5 | 6.2 | 4.9 | -- | -- | -- | -- |
| 1912 | Dungarvan Ireland | 7 | 5.7 | 6.4 | 8.7 | 6.8 | -- | -- | -- | -- |
| 1913 | Limerick Ireland | 7 | 6.6 | 7.5 | -- | -- | -- | -- | -- | -- |
| 1914 |  Ervedeira Portugal | 7 | 7.5 | 8.9 | -- | -- | -- | -- | -- | -- |
| 1915 |  Strezhevoy Russia | 7 | 5.2 | -- | -- | -- | -- | -- | -- | -- |
| 1916 |  Aia Spain | 7 | 5.2 | 4.9 | 5.8 | 5.3 | 5 | -- | -- | -- |
| 1917 | Medina del Campo Spain | 7 | 6.7 | 6.8 | 6.4 | 8.4 | -- | -- | -- | -- |
| 1918 | Galilea Spain | 7 | 5.8 | 7.1 | 8.6 | 7.5 | 7.5 | 8 | -- | -- |
| 1919 | Caudete de las Fuentes Spain | 7 | 4.8 | 5.3 | 4.8 | 6.9 | 5.9 | 6.1 | 5.7 | 7.7 |
| 1920 | Sagunt Spain | 7 | 7.1 | 6.9 | 6.7 | 8.6 | 9.2 | 5 | 6.7 | 7 |
| 1921 |  Korotych Ukraine | 7 | 7.6 | 8.5 | -- | -- | -- | -- | -- | -- |
| 1922 |  Hollinswood United Kingdom | 7 | 6 | 6.1 | -- | -- | -- | -- | -- | -- |
| 1923 | Honiton United Kingdom | 7 | 5.9 | 6.2 | 5.5 | -- | -- | -- | -- | -- |
| 1924 | Oxford United Kingdom | 7 | 5.2 | 7.4 | 9.6 | 9.8 | 7.5 | 9.4 | 10.2 | 10.9 |
| 1925 | Port Talbot United Kingdom | 7 | 7.5 | 8.3 | 8.5 | 9.2 | 9.7 | 10.3 | 10.8 | 10.3 |
| 1926 | Wrexham United Kingdom | 7 | 6.3 | 6.2 | 7.9 | 8.1 | 7.7 | 8 | -- | -- |
| 1927 |  Neualm Austria | 6.9 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1928 | Bourges France | 6.9 | 7.1 | 8.2 | 8.4 | 9.1 | -- | -- | -- | -- |
| 1929 | Châteauroux France | 6.9 | 7 | 8.4 | 8.6 | 9.2 | -- | -- | -- | -- |
| 1930 | Saint-Sulpice-de-Pommeray France | 6.9 | 7 | 7.9 | -- | -- | -- | -- | -- | -- |
| 1931 | Hossegor France | 6.9 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1932 | Le Palais-sur-Vienne France | 6.9 | 13.3 | 5.2 | 8.2 | 6.3 | -- | -- | -- | -- |
| 1933 | Bouchemaine France | 6.9 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1934 | Steingaden Germany | 6.9 | 6 | -- | -- | -- | -- | -- | -- | -- |
| 1935 | Bad Nauheim Germany | 6.9 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1936 | Stapelburg Germany | 6.9 | 6 | -- | -- | -- | -- | -- | -- | -- |
| 1937 | Mallow Ireland | 6.9 | 5.9 | 5.7 | 7.1 | 6.6 | -- | -- | -- | -- |
| 1938 | Cavan Ireland | 6.9 | 6.5 | 5.9 | 7.1 | 6.4 | -- | -- | -- | -- |
| 1939 |  Baltezers Latvia | 6.9 | 7.4 | 9.4 | -- | -- | -- | -- | -- | -- |
| 1940 |  Leeuwarden Netherlands | 6.9 | 6.5 | -- | -- | -- | -- | -- | -- | -- |
| 1941 |  Elverum Norway | 6.9 | 7.5 | 6.9 | 7 | 6.5 | 6.2 | 7.4 | 7.6 | 6.7 |
| 1942 | Brevik Norway | 6.9 | 7.3 | 6.3 | 6.8 | 7 | 6.3 | 7.2 | 7.4 | 6.1 |
| 1943 |  Nowa Świdziałówka Poland | 6.9 | 6.8 | 5.9 | -- | -- | -- | -- | -- | -- |
| 1944 | San Sebastian Spain | 6.9 | 6.7 | 8.8 | -- | -- | -- | -- | -- | -- |
| 1945 |  Hagelbyleden Sweden | 6.9 | 6.6 | 6.7 | -- | -- | -- | -- | -- | -- |
| 1946 | Gateshead United Kingdom | 6.9 | 6.6 | 5.9 | 6.9 | 6.4 | 6.6 | 7.1 | 7.3 | 7.6 |
| 1947 | Nantwich United Kingdom | 6.9 | 6.7 | 8.2 | 9.9 | 11.4 | 10.9 | 12.6 | -- | -- |
| 1948 | Tamsweg Austria | 6.8 | 9.9 | 7.4 | 8.1 | 9 | -- | -- | -- | -- |
| 1949 |  Sakskøbing Denmark | 6.8 | 6.3 | 9.3 | -- | -- | -- | -- | -- | -- |
| 1950 | Montargis France | 6.8 | 7 | 8.1 | 9.4 | 9.9 | 7.6 | 8.6 | 9.1 | 9.8 |
| 1951 | Le Robert France | 6.8 | 8.7 | 8.3 | 8 | 9.8 | 8.7 | -- | -- | -- |
| 1952 | Graben-Neudorf Germany | 6.8 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1953 | Nennslingen Germany | 6.8 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1954 | Kellerwald Germany | 6.8 | 5.8 | 7.1 | -- | -- | -- | -- | -- | -- |
