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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 655 |  Fresno USA | 8.7 | 10.2 | 11.2 | 13.8 | 16.9 | 22.2 | 12 | 14 | 10.9 |
| 656 | Lomita USA | 8.7 | 9.1 | 8.6 | 9 | 8.5 | -- | -- | -- | -- |
| 657 | Redondo Beach USA | 8.7 | 9.1 | 10.6 | 12.8 | 12.7 | 12.9 | 11 | -- | -- |
| 658 | Dallas USA | 8.7 | -- | -- | -- | -- | -- | -- | -- | -- |
| 659 | Rome USA | 8.7 | 7.8 | 9 | 9 | 9.8 | 9.4 | 11.3 | -- | -- |
| 660 | Williamson USA | 8.7 | 8.7 | -- | -- | -- | -- | -- | -- | -- |
| 661 | Idaho City USA | 8.7 | 12.3 | 7.5 | 7.9 | 10 | 11.3 | 9 | 10.6 | 10.7 |
| 662 | Rathdrum USA | 8.7 | 7.6 | 9.8 | 18.4 | 14 | -- | -- | -- | -- |
| 663 | Sandpoint USA | 8.7 | 6.8 | 9.3 | 11.1 | 12.4 | 10.2 | 6.4 | 10.7 | 11.1 |
| 664 | Geneva USA | 8.7 | 7.1 | -- | -- | -- | -- | -- | -- | -- |
| 665 | Schererville USA | 8.7 | 6.9 | 14.5 | 14 | -- | -- | -- | -- | -- |
| 666 | South Bend USA | 8.7 | 7.2 | 11.2 | 10.1 | 10.6 | -- | 9.1 | 9.9 | -- |
| 667 | Ankeny USA | 8.7 | 7.4 | -- | -- | -- | -- | -- | -- | -- |
| 668 | Brethren USA | 8.7 | -- | -- | -- | -- | -- | -- | -- | -- |
| 669 | Kalamazoo USA | 8.7 | 6.8 | 10.5 | 8.9 | 12 | 8.3 | 7.6 | 8 | 8.1 |
| 670 | North Branch USA | 8.7 | 7.4 | 10.4 | -- | -- | -- | -- | -- | -- |
| 671 | Saginaw USA | 8.7 | 7.4 | 12.3 | -- | -- | -- | -- | -- | -- |
| 672 | Shakopee USA | 8.7 | 7.8 | 11.3 | 7.1 | 7 | 6 | 7.1 | -- | -- |
| 673 | Bexley USA | 8.7 | 8.2 | 12.2 | 13.8 | -- | -- | -- | -- | -- |
| 674 | Cleveland Heights USA | 8.7 | 8.1 | 10.6 | -- | -- | -- | -- | -- | -- |
| 675 | Ontario USA | 8.7 | 8.5 | 11.1 | -- | -- | -- | -- | -- | -- |
| 676 | Steubenville USA | 8.7 | 7.5 | 10.7 | 8.6 | 12 | 6.6 | 11.1 | 12.4 | 12.3 |
| 677 | Beaver Falls USA | 8.7 | 7.5 | 12.3 | 9.9 | 11 | 8.6 | 9.5 | 10.8 | 11 |
| 678 | Clairton USA | 8.7 | 7.2 | 10.3 | 10.7 | 12.3 | 10.6 | 12.7 | -- | -- |
| 679 | Coraopolis USA | 8.7 | 7.7 | 19.3 | 7.2 | -- | -- | -- | -- | -- |
| 680 | Dickson City USA | 8.7 | 7 | -- | -- | -- | -- | -- | -- | -- |
| 681 | East Bangor USA | 8.7 | 7.1 | -- | -- | -- | -- | -- | -- | -- |
| 682 | Gordonville USA | 8.7 | 9.4 | 15.4 | 14.5 | 13.7 | 9.7 | 11 | 9.2 | 10.8 |
| 683 | Lansford USA | 8.7 | 7.3 | -- | -- | -- | -- | -- | -- | -- |
| 684 | Wyomissing USA | 8.7 | 8.6 | 10.9 | -- | -- | -- | -- | -- | -- |
| 685 | Pharr USA | 8.7 | 10.5 | 8.2 | -- | -- | -- | -- | -- | -- |
| 686 | Richardson USA | 8.7 | 8.6 | 8.8 | 7.5 | 8.5 | 8.2 | -- | -- | -- |
| 687 | Temple USA | 8.7 | 9.3 | 7.6 | 7.9 | 7.9 | 8.4 | 8.7 | -- | -- |
| 688 | The Woodlands USA | 8.7 | 10.2 | 8.7 | 17.9 | 11.9 | -- | -- | -- | -- |
| 689 | Whitehouse USA | 8.7 | -- | -- | -- | -- | -- | -- | -- | -- |
| 690 |  Beaverlodge Canada | 8.6 | 10.3 | 13.6 | 4.9 | 5.1 | 4.7 | 6.8 | 8.1 | 5.6 |
| 691 | Hanna Canada | 8.6 | 7.9 | 10.1 | 6.3 | 6.6 | -- | -- | -- | -- |
| 692 | Fernie Canada | 8.6 | 7.4 | 10.9 | 18.5 | -- | -- | -- | -- | -- |
| 693 | Burlington Canada | 8.6 | 6.8 | 10.8 | 8.4 | 9.6 | 7.4 | 6.8 | 7.5 | 7.4 |
| 694 | Collingwood Canada | 8.6 | 7.1 | -- | -- | -- | -- | -- | -- | -- |
| 695 | Woodstock Canada | 8.6 | 6.8 | 12.1 | 11.9 | 12.1 | -- | -- | -- | -- |
| 696 | Saint-Eustache Canada | 8.6 | 6.9 | -- | -- | -- | -- | -- | -- | -- |
| 697 | Val-David Canada | 8.6 | 8.7 | 10.1 | 7 | -- | -- | -- | -- | -- |
| 698 | Swift Current Canada | 8.6 | 7.5 | 12 | 5.6 | 6.6 | -- | -- | -- | -- |
| 699 |  La Libertad El Salvador | 8.6 | 11.9 | 18.1 | -- | -- | -- | -- | -- | -- |
| 700 | Hot Springs USA | 8.6 | 9.7 | -- | -- | -- | -- | -- | -- | -- |
| 701 | Avenal USA | 8.6 | 15.6 | 8.3 | 15.7 | 20 | -- | -- | -- | -- |
| 702 | Crystal River USA | 8.6 | 8.3 | 8.7 | 8.4 | 8.6 | 8.7 | 8.2 | 8.3 | 9.7 |
| 703 | Sandersville USA | 8.6 | 8 | 10.6 | 8.2 | -- | -- | -- | -- | -- |
| 704 | Tucker USA | 8.6 | 8.8 | 13.6 | 12.5 | 14.3 | -- | -- | -- | -- |
