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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1705 |  Walenstadt Switzerland | 7.8 | 8 | -- | -- | -- | -- | -- | -- | -- |
| 1706 | Giubiasco Switzerland | 7.8 | 8 | 8.8 | 10.1 | 8.6 | -- | -- | -- | -- |
| 1707 | Lugano Switzerland | 7.8 | 7.2 | 9.9 | 10 | 11.4 | 11.9 | 11.3 | 12.7 | 13.5 |
| 1708 | Martigny-Combe Switzerland | 7.8 | 6.3 | 7.9 | -- | -- | -- | -- | -- | -- |
| 1709 |  Uzhgorod Ukraine | 7.8 | 11.6 | 12.3 | 21.4 | -- | -- | -- | -- | -- |
| 1710 |  Birkenhead United Kingdom | 7.8 | 7 | 6 | 7.5 | 7.1 | 7.2 | 8.5 | 8.3 | 7.3 |
| 1711 | Blackburn United Kingdom | 7.8 | 7 | 7.1 | -- | -- | -- | -- | -- | -- |
| 1712 | Chesterfield United Kingdom | 7.8 | 7 | 6.9 | 7.5 | 7 | 7.3 | 9 | 9.7 | 8.8 |
| 1713 | Coventry United Kingdom | 7.8 | 7 | 6.6 | 7.4 | 7.5 | 7.4 | 9.3 | 12.1 | 11.4 |
| 1714 | Horsham United Kingdom | 7.8 | 6.2 | 8.4 | 10.5 | 12.1 | -- | -- | -- | -- |
| 1715 | Ruislip United Kingdom | 7.8 | 7.1 | 7.9 | -- | -- | -- | -- | -- | -- |
| 1716 | Watchfield United Kingdom | 7.8 | 6.1 | 8.3 | -- | -- | -- | -- | -- | -- |
| 1717 | Dunmurry United Kingdom | 7.8 | 7.1 | 6.5 | -- | -- | -- | -- | -- | -- |
| 1718 |  Heiterwang Austria | 7.7 | 6.7 | 3.5 | 4.4 | 4.4 | -- | -- | -- | -- |
| 1719 |  Liège Belgium | 7.7 | 6.2 | 6.9 | 7.7 | 8.7 | 6.5 | 9.2 | 10.8 | 10 |
| 1720 | Seraing Belgium | 7.7 | 7.5 | 10 | 11.6 | 12.7 | 10.9 | 10.5 | 12.5 | 11.4 |
| 1721 |  Vichy France | 7.7 | 6.4 | -- | -- | -- | -- | -- | -- | -- |
| 1722 | Épernay France | 7.7 | 6.7 | 7.6 | 8.4 | 8.9 | 8.2 | 9.3 | 10.5 | 9.6 |
| 1723 | Notre-Dame-de-Bliquetuit France | 7.7 | 9.1 | 8.2 | -- | -- | -- | -- | -- | -- |
| 1724 | Montauban France | 7.7 | 8.2 | 9.5 | -- | -- | -- | -- | -- | -- |
| 1725 | Plan-d'Aups-Sainte-Baume France | 7.7 | 7 | 8.4 | -- | -- | -- | -- | -- | -- |
| 1726 |  Harburg Germany | 7.7 | 7.6 | 7.4 | -- | -- | -- | -- | -- | -- |
| 1727 | Leverkusen Germany | 7.7 | 8.2 | 7.8 | 10 | 9.6 | 9.1 | 13 | 15.5 | -- |
| 1728 | Schwerte Germany | 7.7 | 7.7 | 7.9 | 11.2 | 9.4 | 8.4 | 8.7 | 13.1 | 12.3 |
| 1729 | Titz Germany | 7.7 | 8 | 8.8 | 12 | 13.6 | 12.6 | -- | -- | -- |
| 1730 | Warstein Germany | 7.7 | 7.8 | 9.5 | 11.6 | 12.5 | 9.2 | 8.2 | 13.3 | 11.6 |
| 1731 | Saarbrucken Germany | 7.7 | 8.1 | 8.2 | 9.1 | 9.6 | 8.8 | 10.1 | 11.8 | 11.6 |
| 1732 | Olbernhau Germany | 7.7 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1733 | Weimar Germany | 7.7 | 8.4 | 7.4 | 9.3 | 10.4 | 9.1 | 9.6 | 13.7 | 12.4 |
| 1734 |  Nijmegen Netherlands | 7.7 | 9.4 | 8.4 | 10.9 | 11.5 | 10 | 11.1 | 11.9 | 11 |
| 1735 |  Lasarte Spain | 7.7 | 7.4 | 9.2 | 9.3 | 8.4 | -- | -- | -- | -- |
| 1736 | Benavente Spain | 7.7 | 7 | 7.6 | 6.8 | -- | -- | -- | -- | -- |
| 1737 | Cardenajimeno Spain | 7.7 | 6 | 4.8 | 5.3 | 5.5 | 5.4 | 5.1 | -- | -- |
| 1738 |  Cankiri Turkey | 7.7 | 9.4 | 8.1 | 9.1 | 9.3 | 19.5 | 19.7 | -- | -- |
| 1739 | Dunstable United Kingdom | 7.7 | 6.9 | 7.6 | -- | -- | -- | -- | -- | -- |
| 1740 | East Boldon United Kingdom | 7.7 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1741 | Egham United Kingdom | 7.7 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1742 | Hedon United Kingdom | 7.7 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1743 | Newbury United Kingdom | 7.7 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1744 | Newcastle upon Tyne United Kingdom | 7.7 | 7.2 | 6.5 | 7.5 | 8.6 | 7.7 | 10.2 | 9 | 7.3 |
| 1745 | Polegate United Kingdom | 7.7 | 6.4 | 7.4 | -- | -- | -- | -- | -- | -- |
| 1746 | Reading United Kingdom | 7.7 | 6.3 | 8.8 | 8.5 | 9 | 8.3 | -- | -- | -- |
| 1747 | Stevenage United Kingdom | 7.7 | 6.6 | 7.3 | 8.4 | 8 | 9.5 | 8.7 | 10.5 | 10.8 |
| 1748 | Thornton Heath United Kingdom | 7.7 | 8.5 | 9.6 | 10.6 | -- | -- | -- | -- | -- |
| 1749 | Walberton United Kingdom | 7.7 | 7 | -- | -- | -- | -- | -- | -- | -- |
| 1750 | Weer Austria | 7.6 | 7.4 | -- | -- | -- | -- | -- | -- | -- |
| 1751 | Namur Belgium | 7.6 | 5.7 | 6.8 | 10.2 | 10.5 | 12.2 | 7.2 | -- | -- |
| 1752 |  Ravna Gora Croatia | 7.6 | 8.1 | 8 | -- | -- | -- | -- | -- | -- |
| 1753 |  Hornbaek Denmark | 7.6 | 7.1 | 7.3 | -- | -- | -- | -- | -- | -- |
| 1754 | Gistrup Denmark | 7.6 | 10.7 | -- | -- | -- | -- | -- | -- | -- |
