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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3679 |  Fernley USA | 4.6 | 5.5 | 8.2 | 5.8 | 25.7 | -- | -- | -- | -- |
| 3680 | Gilford USA | 4.6 | 3.8 | 5.1 | 3.5 | 6.3 | -- | -- | -- | -- |
| 3681 | Placitas USA | 4.6 | 4.4 | 3 | 2.9 | -- | -- | -- | -- | -- |
| 3682 | Taos USA | 4.6 | 4.9 | 5.2 | 5.4 | 7.8 | 8.3 | 6.9 | 6.4 | 4.2 |
| 3683 | White Rock USA | 4.6 | 4.8 | 3.8 | 2.9 | 5.9 | -- | -- | -- | -- |
| 3684 | Cherokee USA | 4.6 | 3.1 | 7.3 | 6.4 | 9 | -- | -- | -- | -- |
| 3685 | Southern Shores USA | 4.6 | 4.8 | 7.2 | -- | -- | -- | -- | -- | -- |
| 3686 | Oberlin USA | 4.6 | 4.2 | 9.3 | 6.4 | 10.4 | -- | -- | -- | -- |
| 3687 | Banks USA | 4.6 | 4.3 | -- | -- | -- | -- | -- | -- | -- |
| 3688 | Eagle Mountain USA | 4.6 | 5.3 | 6.1 | 5.5 | 15.2 | 8.1 | 5.4 | -- | -- |
| 3689 | Hurricane USA | 4.6 | 4.4 | 3.6 | 3.3 | 5.5 | 5.3 | 4 | 6.3 | 5.2 |
| 3690 | Oakley USA | 4.6 | 4.9 | 3.4 | 2.9 | 9.2 | 6.4 | 4 | -- | -- |
| 3691 | Stanley USA | 4.6 | 5.3 | 5.5 | -- | -- | -- | -- | -- | -- |
| 3692 | Bremerton USA | 4.6 | 4.2 | 5.8 | 8.1 | 5.6 | 7.3 | 5.9 | 5.1 | 6.6 |
| 3693 | Lake Forest Park USA | 4.6 | 4.3 | 6 | 9.3 | 5.7 | -- | -- | -- | -- |
| 3694 | Ridgefield USA | 4.6 | 4.2 | 6.4 | 10.1 | 7.1 | -- | -- | -- | -- |
| 3695 | Snoqualmie Pass USA | 4.6 | 3.6 | -- | -- | -- | -- | -- | -- | -- |
| 3696 | White Salmon USA | 4.6 | 4.6 | 7.5 | 8 | 6.9 | -- | -- | -- | -- |
| 3697 | Hoback USA | 4.6 | 5.6 | 5 | 2.9 | 20.5 | -- | -- | -- | -- |
| 3698 |  Steeper Canada | 4.5 | 4.4 | 8.9 | 2.5 | 4.2 | -- | -- | -- | -- |
| 3699 | Logan Lake Canada | 4.5 | 4.2 | 9.3 | 5 | 21.1 | -- | -- | -- | -- |
| 3700 | Maple Ridge Canada | 4.5 | 4.3 | 6.2 | 8.2 | 7.1 | -- | -- | -- | -- |
| 3701 | North Vancouver Canada | 4.5 | 3.9 | 5.6 | 6.8 | 4.9 | 6.2 | 4.8 | -- | -- |
| 3702 | Pemberton Canada | 4.5 | 4 | 9.3 | 10.8 | 8.5 | -- | -- | -- | -- |
| 3703 | Chester Canada | 4.5 | 5 | -- | -- | -- | -- | -- | -- | -- |
| 3704 | Les Escoumins Canada | 4.5 | 3.4 | 5.2 | 5 | -- | -- | -- | -- | -- |
| 3705 | Grand Canyon Village USA | 4.5 | 4.1 | 3.7 | 9.8 | 4.3 | -- | -- | -- | -- |
| 3706 | Sierra Vista USA | 4.5 | 4.6 | 2.9 | 1.5 | 4.6 | -- | -- | -- | -- |
| 3707 | Bear Valley USA | 4.5 | 4.6 | 5.5 | 4.2 | -- | -- | -- | -- | -- |
| 3708 | Beckwourth USA | 4.5 | 4.9 | -- | -- | -- | -- | -- | -- | -- |
| 3709 | Belmont USA | 4.5 | 4 | 5.1 | 6.8 | 7.4 | 9.5 | 5.9 | -- | -- |
| 3710 | Black Point-Green Point USA | 4.5 | 4.1 | 5.5 | 7.3 | 8.4 | -- | -- | -- | -- |
| 3711 | Castro Valley USA | 4.5 | 4.4 | 5.9 | 7.8 | 8 | 11.7 | 7.1 | -- | -- |
| 3712 | Clayton USA | 4.5 | 4.2 | 5.2 | 5.7 | 8.1 | 12.9 | 6.3 | -- | -- |
| 3713 | Coleville USA | 4.5 | 4.1 | 3.5 | 5.8 | 17.3 | -- | -- | -- | -- |
| 3714 | Copperopolis USA | 4.5 | 5.3 | 6.7 | 7.3 | 12.3 | -- | -- | -- | -- |
| 3715 | Cotati USA | 4.5 | 4.1 | 6.5 | 8.3 | 8.8 | 11.3 | 7 | -- | -- |
| 3716 | El Dorado USA | 4.5 | 4.9 | 6.3 | 7 | 15.7 | -- | -- | -- | -- |
| 3717 | Half Moon Bay USA | 4.5 | 4 | 5.2 | 6.8 | 7.1 | 8.1 | 5.9 | -- | -- |
| 3718 | Healdsburg USA | 4.5 | 3.8 | 5 | 5.5 | 6.6 | 10.3 | 7 | -- | -- |
| 3719 | Kentfield USA | 4.5 | 4.2 | 5 | 6 | 7.1 | 10.9 | 6 | -- | -- |
| 3720 | Kenwood USA | 4.5 | 4 | 5 | 5.6 | 7.6 | 12.2 | 6.1 | -- | -- |
| 3721 | Kirkwood USA | 4.5 | 4.7 | 5 | 5.2 | -- | -- | -- | -- | -- |
| 3722 | Ladera USA | 4.5 | 4.1 | -- | -- | -- | -- | -- | -- | -- |
| 3723 | Los Gatos USA | 4.5 | 3.7 | 4.8 | 5.4 | 6.8 | 8.4 | 3.9 | -- | -- |
| 3724 | Marin City USA | 4.5 | 4.4 | 1.7 | -- | -- | -- | -- | -- | -- |
| 3725 | Montara USA | 4.5 | 3.5 | 5.9 | 8.1 | 8.8 | -- | 7 | -- | -- |
| 3726 | Moraga USA | 4.5 | 4.3 | 5.8 | 7.3 | 8.2 | 12.4 | 6.3 | -- | -- |
| 3727 | Newell USA | 4.5 | 7.4 | -- | -- | -- | -- | -- | -- | -- |
| 3728 | Pinole USA | 4.5 | 4.5 | 6.2 | 7.8 | 8.4 | -- | -- | -- | -- |
