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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1655 |  Martock United Kingdom | 8 | 5.8 | 8.4 | 9.6 | 11 | -- | -- | -- | -- |
| 1656 | Southampton United Kingdom | 8 | 6.7 | 7.5 | 9.4 | 8.6 | 8.9 | 12.3 | 13.4 | 11.2 |
| 1657 | Wretham United Kingdom | 8 | 7.6 | 6.6 | -- | -- | -- | -- | -- | -- |
| 1658 | Holywood United Kingdom | 8 | 7 | 6.3 | 6.7 | 12.2 | -- | -- | -- | -- |
| 1659 |  Knittelfeld Austria | 7.9 | 10.4 | 12.7 | 13 | 13.3 | 11.8 | -- | -- | -- |
| 1660 |  Saint-Nicolas Belgium | 7.9 | 6.8 | 6.8 | 7.8 | 8.6 | 7.2 | 10.1 | 10.8 | 9.4 |
| 1661 |  Zoljan Croatia | 7.9 | 15.8 | 12.9 | 13.3 | -- | -- | -- | -- | -- |
| 1662 |  Křešín Czech Republic | 7.9 | 9.1 | 8 | -- | -- | -- | -- | -- | -- |
| 1663 |  Saint-Malo France | 7.9 | 8 | 9.1 | 12.6 | 9.9 | -- | -- | -- | -- |
| 1664 | Lirey France | 7.9 | 6.2 | 7.5 | -- | -- | -- | -- | -- | -- |
| 1665 | Sainte-Luce France | 7.9 | 8.5 | 8.4 | 7.3 | 10.3 | 9.4 | 8.9 | -- | -- |
| 1666 | Mamoudzou France | 7.9 | 8.4 | 13.5 | -- | -- | -- | -- | -- | -- |
| 1667 | Montoir-de-Bretagne France | 7.9 | 7.4 | 8.8 | 9.9 | -- | -- | -- | -- | -- |
| 1668 | Salon-de-Provence France | 7.9 | 7.9 | 9 | 11.4 | 9.6 | 8.7 | -- | -- | -- |
| 1669 |  Eggenstein-Leopoldshafen Germany | 7.9 | 7.5 | 7.7 | -- | -- | -- | -- | -- | -- |
| 1670 | Freiburg Germany | 7.9 | 7 | 7.2 | 9 | 7.5 | 8.1 | 9.4 | 10.6 | 10.5 |
| 1671 | Pforzheim Germany | 7.9 | 7.6 | 8.1 | 9.7 | 9 | 8.4 | 9.7 | 11 | 10.4 |
| 1672 | Altenburg Germany | 7.9 | 9 | 7.3 | 8.5 | 10.9 | 10.2 | -- | -- | -- |
| 1673 | Nordhausen Germany | 7.9 | 8.1 | 7.6 | 10.1 | 12.9 | -- | -- | -- | -- |
| 1674 |  Neapoli Greece | 7.9 | 7.3 | 14.7 | 17.5 | -- | -- | -- | -- | -- |
| 1675 |  Portlaoise Ireland | 7.9 | 7.6 | 6.8 | 7.8 | 7.2 | 7.9 | -- | -- | -- |
| 1676 |  Enschede Netherlands | 7.9 | 7.1 | 7.1 | 8.8 | 9.2 | 8.5 | 10 | 10.5 | 11.1 |
| 1677 |  Brumunddal Norway | 7.9 | 10.3 | 9.4 | 9.4 | 9.7 | 7.1 | 8.7 | -- | -- |
| 1678 |  Malaga Spain | 7.9 | 8.4 | -- | -- | -- | -- | -- | -- | -- |
| 1679 | Valladolid Spain | 7.9 | 7.8 | 7.1 | 11.2 | 10.6 | 9.7 | 10.8 | 10.1 | 11.2 |
| 1680 | Gandesa Spain | 7.9 | 7 | -- | -- | -- | -- | -- | -- | -- |
| 1681 | Lleida Spain | 7.9 | 8.6 | -- | -- | -- | -- | -- | -- | -- |
| 1682 | Getafe Spain | 7.9 | 8.5 | 9.7 | 10.9 | 11 | 11.8 | 11.5 | -- | -- |
| 1683 |  Melano Switzerland | 7.9 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1684 | Cambridge United Kingdom | 7.9 | 6.1 | 7.9 | 10 | 10.7 | 9.3 | 10.9 | 12 | 12.6 |
| 1685 | Crewe United Kingdom | 7.9 | 7 | 6.2 | 6.9 | -- | -- | -- | -- | -- |
| 1686 | Hastings United Kingdom | 7.9 | 5.7 | 9.6 | 10.1 | 10.1 | -- | -- | -- | -- |
| 1687 | Huntingdon United Kingdom | 7.9 | 7 | 6.9 | 8.8 | 8.1 | 7.8 | 7.4 | -- | -- |
| 1688 | Northwood United Kingdom | 7.9 | 11.3 | 8.3 | 10.1 | -- | -- | -- | -- | -- |
| 1689 | Royal Leamington Spa United Kingdom | 7.9 | 6.6 | 6.7 | 7.4 | 7 | 7.1 | 9.5 | 11 | 11 |
| 1690 | Staines-upon-Thames United Kingdom | 7.9 | 7.1 | 8.6 | -- | -- | -- | -- | -- | -- |
| 1691 | Windsor United Kingdom | 7.9 | 7.5 | 8.3 | 10 | 11.3 | 10.5 | -- | -- | -- |
| 1692 | Belfast United Kingdom | 7.9 | 7.3 | 7 | 8.7 | 9.3 | -- | 12.9 | 13 | 10.2 |
| 1693 |  Stenlose Denmark | 7.8 | 8.9 | -- | -- | -- | -- | -- | -- | -- |
| 1694 | Saint-Étienne France | 7.8 | 8 | 8.5 | 11.3 | 8.6 | 7.9 | 8.3 | 9.1 | 9.2 |
| 1695 | Cayenne France | 7.8 | 11.1 | 7.3 | 8.7 | 10 | 10.5 | -- | -- | -- |
| 1696 | Saint-Martin-du-Tertre France | 7.8 | 6.5 | 7.4 | -- | -- | -- | -- | -- | -- |
| 1697 | Mahlberg Germany | 7.8 | 8.4 | -- | -- | -- | -- | -- | -- | -- |
| 1698 | Holzkirchen Germany | 7.8 | 6.7 | -- | -- | -- | -- | -- | -- | -- |
| 1699 | Gera Germany | 7.8 | 8.2 | 6.6 | 9.4 | 8.5 | -- | -- | -- | -- |
| 1700 | Jena Germany | 7.8 | 8.5 | 7.5 | 9.3 | 12 | -- | -- | -- | -- |
| 1701 |  Monterotondo Italy | 7.8 | 7.5 | -- | -- | -- | -- | -- | -- | -- |
| 1702 | Sarria Spain | 7.8 | 6.9 | 13.9 | 12.6 | 8.6 | -- | -- | -- | -- |
| 1703 | Brugg Switzerland | 7.8 | 7.2 | 6.6 | -- | -- | -- | -- | -- | -- |
| 1704 | Teufenthal Switzerland | 7.8 | 6.3 | 5.8 | -- | -- | -- | -- | -- | -- |
