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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 805 |  Peaceful Valley USA | 8.5 | 4.6 | 9.7 | 19.8 | 15.6 | -- | -- | -- | -- |
| 806 | Rothschild USA | 8.5 | 5.5 | 7 | -- | -- | -- | -- | -- | -- |
| 807 |  Grimshaw Canada | 8.4 | 10.1 | 27.5 | -- | -- | -- | -- | -- | -- |
| 808 | Wabasca-Desmarais Canada | 8.4 | 6.4 | 17.5 | 5.6 | 7.6 | -- | -- | -- | -- |
| 809 | Coldwater Canada | 8.4 | 6.1 | 9.2 | -- | -- | -- | -- | -- | -- |
| 810 | Guelph Canada | 8.4 | 7.1 | 10.7 | 7.3 | 8 | 7.3 | 7.1 | 8.1 | 7.3 |
| 811 | Oakville Canada | 8.4 | 7.1 | 10.9 | 6.8 | 7.2 | 6.3 | 6.9 | 7.5 | 7.3 |
| 812 | Terrebonne Canada | 8.4 | 7.3 | 9.2 | 8 | 8.3 | -- | -- | -- | -- |
| 813 | Harvest USA | 8.4 | 6.8 | 11.9 | 12.5 | 13.6 | -- | -- | -- | -- |
| 814 | Camp Pendleton South USA | 8.4 | 7.8 | 8.6 | 8.3 | -- | -- | -- | -- | -- |
| 815 | Coronado USA | 8.4 | 8.1 | 10.1 | 10.4 | 12.1 | -- | -- | -- | -- |
| 816 | New Cuyama USA | 8.4 | 4.7 | 5.4 | 5.5 | -- | -- | -- | -- | -- |
| 817 | Norwalk USA | 8.4 | 9.7 | 12 | 13.2 | 15.5 | -- | -- | -- | -- |
| 818 | Palo Cedro USA | 8.4 | 7.4 | 8 | 6.8 | 18.5 | -- | 7.9 | -- | -- |
| 819 | Sanger USA | 8.4 | 3.4 | 10.1 | 14.5 | 21.5 | -- | -- | -- | -- |
| 820 | Decatur USA | 8.4 | 8.5 | 12 | 10.5 | 11.1 | 9.2 | 9.6 | 9.1 | 9.7 |
| 821 | Manteno USA | 8.4 | 6.4 | 8.2 | -- | -- | -- | -- | -- | -- |
| 822 | Springfield USA | 8.4 | 7 | 10.4 | 8.9 | 8.8 | 7.6 | 8.7 | 9.6 | -- |
| 823 | Terre Haute USA | 8.4 | 8 | 11.2 | 9.1 | 9.2 | -- | 11.8 | 10.7 | -- |
| 824 | Iowa City USA | 8.4 | 7.2 | 12.4 | 9.2 | 11 | 9.7 | 9.6 | 8.6 | 8.2 |
| 825 | Saylorville USA | 8.4 | 7 | 10.7 | -- | -- | -- | -- | -- | -- |
| 826 | Wichita USA | 8.4 | 7.6 | 10.7 | 9.5 | 11.2 | 7.4 | 8.3 | 6.6 | 6.9 |
| 827 | Thibodaux USA | 8.4 | 9.3 | 10.3 | 9.1 | 9.2 | 9.5 | 10.2 | 6 | 5.9 |
| 828 | Aberdeen USA | 8.4 | 7.9 | 11 | -- | -- | -- | -- | -- | -- |
| 829 | Frederick USA | 8.4 | 8.3 | 10.5 | 2.1 | 10.6 | -- | -- | -- | -- |
| 830 | Landover USA | 8.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 831 | Owings Mills USA | 8.4 | 7.8 | 10.6 | 8.6 | 10.2 | -- | -- | -- | -- |
| 832 | West Laurel USA | 8.4 | 7.7 | -- | -- | -- | -- | -- | -- | -- |
| 833 | Grand Rapids USA | 8.4 | 7.8 | 12 | 10.3 | 10.8 | 9.2 | 8.6 | 8 | 8.2 |
| 834 | Lansing USA | 8.4 | 7.7 | 11.7 | 8.4 | 9.3 | 7.9 | 7.5 | 7.3 | 7.5 |
| 835 | Leland USA | 8.4 | 4.8 | 10.3 | 5.5 | 7.2 | -- | -- | -- | -- |
| 836 | Braham USA | 8.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 837 | Hopkins USA | 8.4 | 5 | 11.8 | 15.7 | -- | -- | -- | -- | -- |
| 838 | Minneapolis USA | 8.4 | 7.6 | 13.3 | 8.8 | 11.4 | 8.4 | 8.8 | 7.8 | 7.7 |
| 839 | Hickman USA | 8.4 | 7.7 | -- | -- | -- | -- | -- | -- | -- |
| 840 | Humphrey USA | 8.4 | 8.3 | -- | -- | -- | -- | -- | -- | -- |
| 841 | South Plainfield USA | 8.4 | 7.6 | 10.9 | -- | -- | -- | -- | -- | -- |
| 842 | Glens Falls USA | 8.4 | 8 | 10.1 | -- | -- | -- | -- | -- | -- |
| 843 | Larchmont USA | 8.4 | 12.2 | -- | -- | -- | -- | -- | -- | -- |
| 844 | Sleepy Hollow USA | 8.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 845 | Bostic USA | 8.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 846 | Chardon USA | 8.4 | 7.7 | 8.3 | 5 | 11.5 | 9.4 | 11 | -- | -- |
| 847 | Powell USA | 8.4 | 7.7 | 11 | -- | -- | -- | -- | -- | -- |
| 848 | Springfield USA | 8.4 | 7.7 | 10.9 | 7.2 | 10.6 | 7.7 | 10.6 | 10.3 | 8.7 |
| 849 | Antlers USA | 8.4 | 9.1 | -- | -- | -- | -- | -- | -- | -- |
| 850 | Allentown USA | 8.4 | 8 | 11.1 | 8.3 | 10 | 8.3 | 8.4 | 9.3 | 9 |
| 851 | Ambridge USA | 8.4 | 7.7 | -- | -- | -- | -- | -- | -- | -- |
| 852 | Braddock USA | 8.4 | 7.8 | 12 | 11.7 | 14.2 | -- | -- | -- | -- |
| 853 | Marcus Hook USA | 8.4 | 7.2 | 10.3 | 8.8 | 9.5 | 8.5 | 8.2 | 11 | 8.8 |
| 854 | McDonald USA | 8.4 | 7.7 | 11.3 | 10 | 12.6 | -- | -- | -- | -- |
