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
PM2.5 legend
0-5Meets WHO guideline
5.1-10Exceeds by 1 to 2 times
10.1-15Exceeds by 2 to 3 times
15.1-25Exceeds by 3 to 5 times
25.1-35Exceeds by 5 to 7 times
35.1-50Exceeds by 7 to 10 times
>50.1Exceeds by over 10 times
| Rank | City | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|
| 8765 |  Kingsbury USA | 4.3 | 4.2 | 4.2 | 6 | 22 | -- | -- | -- | -- |
| 8766 | Angel Fire USA | 4.3 | 4.5 | 3.6 | 2.6 | -- | -- | -- | -- | -- |
| 8767 | Los Alamos USA | 4.3 | 4 | 3.4 | 3.1 | 6.6 | 6.7 | 4.5 | -- | -- |
| 8768 | Nageezi USA | 4.3 | 4.7 | 4.3 | -- | -- | -- | -- | -- | -- |
| 8769 | Roswell USA | 4.3 | 4.5 | 4.5 | 4.4 | 8.9 | 6.6 | 7.2 | -- | -- |
| 8770 | Maupin USA | 4.3 | 3.9 | 7 | 6.7 | -- | -- | -- | -- | -- |
| 8771 | Wheeler USA | 4.3 | -- | -- | -- | -- | -- | -- | -- | -- |
| 8772 | Dickinson USA | 4.3 | 5.3 | 7.8 | 6.3 | 9.8 | -- | -- | -- | -- |
| 8773 | Spring City USA | 4.3 | 3.7 | 2.4 | 5.2 | 10.2 | 8 | 4.3 | -- | -- |
| 8774 | Wolf Creek USA | 4.3 | 5.1 | 3 | 2.2 | 11.1 | -- | -- | -- | -- |
| 8775 | Bothell USA | 4.3 | 4 | 6 | 9.9 | 6.7 | 9.3 | 7.9 | -- | -- |
| 8776 | Boulevard Park USA | 4.3 | 4.2 | 6.7 | -- | -- | -- | -- | -- | -- |
| 8777 | Dayton USA | 4.3 | 3.7 | 6.1 | 5.3 | 5.9 | -- | 5.3 | 5.7 | 7.6 |
| 8778 | Fircrest USA | 4.3 | 4.8 | 7.6 | -- | -- | -- | -- | -- | -- |
| 8779 | North Bend USA | 4.3 | 3.3 | 4.5 | 8.6 | 5.8 | 8.7 | 4.8 | 4.7 | 5 |
| 8780 | Palouse USA | 4.3 | 4.1 | 6.6 | 7.9 | 20.2 | -- | -- | -- | -- |
| 8781 | Underwood USA | 4.3 | 4.2 | -- | -- | -- | -- | -- | -- | -- |
| 8782 |  Narrabri Australia | 4.2 | 4.3 | 4.6 | 3.9 | 10.1 | 7.2 | -- | -- | -- |
| 8783 | Adelaide Australia | 4.2 | 4.7 | 4.7 | 3.7 | 5.1 | 5.6 | 5.9 | 6.5 | -- |
| 8784 | Devonport Australia | 4.2 | 5 | 4.1 | 4.2 | 4.3 | 5.8 | 5.5 | 5.3 | 5.4 |
| 8785 | Churchill Australia | 4.2 | 5.2 | 4.9 | 4.5 | 7 | 11.4 | 9.5 | 6.4 | 7 |
| 8786 |  Nanaimo Canada | 4.2 | 4.1 | 5.8 | 5.8 | 5.6 | 6.7 | 6 | -- | -- |
| 8787 | Sooke Canada | 4.2 | 4.2 | 5.8 | 7.6 | 7.9 | 10.6 | 8.8 | -- | -- |
| 8788 | Terrace Canada | 4.2 | 3.8 | 4.9 | 4.1 | 4.1 | 4.6 | 5.8 | -- | -- |
| 8789 | Victoria Canada | 4.2 | 4.1 | 5.6 | 6.6 | 5.6 | 6.2 | 7.1 | 9.1 | 7.4 |
| 8790 | West Vancouver Canada | 4.2 | 3.7 | 5.3 | 6.7 | 4.6 | 6.4 | 4.4 | -- | -- |
| 8791 | Fredericton Canada | 4.2 | 3.9 | 5.9 | 5.2 | 5.9 | 5.8 | -- | -- | -- |
| 8792 | Labrador City Canada | 4.2 | 4.5 | 6.8 | 3.5 | 3.3 | -- | 3.1 | -- | -- |
| 8793 | Port Hawkesbury Canada | 4.2 | 4.3 | 5.3 | 5.2 | 5.4 | 5 | 5.3 | 5.5 | 5.7 |
| 8794 |  Sinimäe Estonia | 4.2 | 4.8 | 4.8 | -- | -- | -- | -- | -- | -- |
| 8795 | Voore Estonia | 4.2 | 3.9 | 4.1 | 3.6 | 4.9 | 4.6 | 5 | 7.1 | 3.8 |
| 8796 |  Egmont Grenada | 4.2 | 4.5 | 4.5 | -- | -- | -- | -- | -- | -- |
| 8797 |  Chepo Panama | 4.2 | 5.9 | 6.6 | 7.9 | 6.9 | -- | -- | -- | -- |
| 8798 |  Kuyulusebil Turkey | 4.2 | 3.8 | 3.2 | 6.6 | 7.3 | -- | -- | -- | -- |
| 8799 | Littlefield USA | 4.2 | 4.3 | 2.5 | -- | -- | -- | -- | -- | -- |
| 8801 | Dollar Point USA | 4.2 | 6 | -- | -- | -- | -- | -- | -- | -- |
| 8802 | Dutch Flat USA | 4.2 | 5.7 | 7.4 | 11.4 | -- | -- | -- | -- | -- |
| 8804 | Highlands USA | 4.2 | 3.8 | -- | -- | -- | -- | -- | -- | -- |
| 8805 | Kings Beach USA | 4.2 | 3.9 | 4.3 | 6.3 | 26.1 | -- | -- | -- | -- |
| 8806 | Lompico USA | 4.2 | 3.6 | -- | -- | -- | -- | -- | -- | -- |
| 8807 | Los Altos Hills USA | 4.2 | 3.9 | 5.2 | 6.4 | 7.3 | -- | -- | -- | -- |
| 8808 | Prunedale USA | 4.2 | 3.7 | 5.7 | 7.5 | 7.5 | -- | 8.9 | -- | -- |
| 8809 | San Rafael USA | 4.2 | 4.2 | 5 | 6.5 | 7.3 | 9.1 | 5.7 | 11.2 | 10 |
| 8810 | Solvang USA | 4.2 | 4.2 | 5.3 | 5.6 | 7.2 | -- | -- | -- | -- |
| 8811 | Sunol USA | 4.2 | 4.8 | 6.8 | 7.6 | -- | -- | -- | -- | -- |
| 8812 | Crook USA | 4.2 | -- | -- | -- | -- | -- | -- | -- | -- |
| 8813 | San Luis USA | 4.2 | 3.8 | 3.8 | 3.6 | 12.2 | -- | -- | -- | -- |
| 8814 | Silverthorne USA | 4.2 | 3.7 | 2.5 | 1.7 | 7.9 | -- | -- | -- | -- |
| 8815 | Steamboat Springs USA | 4.2 | 3.7 | 2.8 | 2.1 | -- | -- | -- | -- | -- |
| 8816 | Orlando USA | 4.2 | 4.5 | 6.8 | 6.5 | 6.8 | 6.6 | 7 | -- | -- |
