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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3717 |  Santa Ana USA | 9.2 | 8.7 | 10.1 | 11.3 | 14 | -- | -- | -- | -- |
| 3718 | Santa Monica USA | 9.2 | 7.9 | 8.9 | 10.1 | 12.7 | 13.3 | 11.6 | -- | -- |
| 3719 | Smyrna USA | 9.2 | 8.8 | 13.8 | 12.3 | -- | -- | -- | -- | -- |
| 3720 | Loves Park USA | 9.2 | 7.4 | 11.2 | -- | -- | -- | -- | -- | -- |
| 3721 | Peoria USA | 9.2 | 7.7 | 13.1 | 11.2 | 11.2 | 8.2 | 8.6 | 9.6 | 9.9 |
| 3722 | Wilmette USA | 9.2 | 7.3 | 13.7 | 7.6 | -- | -- | -- | -- | -- |
| 3723 | Lafayette USA | 9.2 | 7.4 | 9.4 | 7.8 | 12 | -- | 8.9 | 8.3 | 9 |
| 3724 | Vincennes USA | 9.2 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3725 | Slater USA | 9.2 | 8 | 9.3 | -- | -- | -- | -- | -- | -- |
| 3726 | Newport USA | 9.2 | 8.6 | 10.4 | -- | -- | -- | -- | -- | -- |
| 3727 | Woodsboro USA | 9.2 | 8 | -- | -- | -- | -- | -- | -- | -- |
| 3728 | Flushing USA | 9.2 | 8.1 | 11.1 | -- | -- | -- | -- | -- | -- |
| 3729 | Grandville USA | 9.2 | 7.6 | 12.9 | 11.4 | -- | -- | -- | -- | -- |
| 3730 | Macomb USA | 9.2 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3731 | Blaine USA | 9.2 | 7.6 | 11 | 6.9 | 9.5 | 8.1 | 8.8 | 8.3 | 8 |
| 3732 | Virginia USA | 9.2 | 5.8 | 8 | 4.7 | 6.7 | 4.6 | 4.9 | 5.8 | 4.6 |
| 3733 | Plains USA | 9.2 | 8.5 | 6.8 | 9.3 | 6.7 | -- | -- | -- | -- |
| 3734 | Waxhaw USA | 9.2 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3735 | Fairlawn USA | 9.2 | 8.7 | 9.6 | -- | -- | -- | -- | -- | -- |
| 3736 | Minerva Park USA | 9.2 | 8.9 | -- | -- | -- | -- | -- | -- | -- |
| 3737 | Orrville USA | 9.2 | 8.7 | 14.3 | 13.1 | 14.6 | -- | -- | -- | -- |
| 3738 | Idabel USA | 9.2 | 9.8 | -- | -- | -- | -- | -- | -- | -- |
| 3739 | New Castle USA | 9.2 | 8 | 12.6 | 15.5 | -- | -- | -- | -- | -- |
| 3740 | Schlusser USA | 9.2 | 9.4 | 14 | 11.3 | 13.9 | -- | -- | -- | -- |
| 3741 | Corpus Christi USA | 9.2 | 9.4 | 8.8 | 8.6 | 8.7 | 7.9 | 8.8 | 9.4 | 8.7 |
| 3742 | New Waverly USA | 9.2 | 7.2 | -- | -- | -- | -- | -- | -- | -- |
| 3743 | Texarkana USA | 9.2 | 9.5 | 11.4 | 10.4 | 10.2 | 9.7 | 10.2 | 9.6 | -- |
| 3744 | West University Place USA | 9.2 | 16 | -- | -- | -- | -- | -- | -- | -- |
| 3745 | Rice USA | 9.2 | 6.7 | -- | -- | -- | -- | -- | -- | -- |
| 3746 | Follansbee USA | 9.2 | 8.5 | -- | -- | -- | -- | -- | -- | -- |
| 3747 | Wausau USA | 9.2 | 6.6 | 10.5 | 7 | 10.7 | 8.4 | -- | -- | -- |
| 3748 |  Esher United Kingdom | 9.2 | 14.6 | -- | -- | -- | -- | -- | -- | -- |
| 3749 |  Gern Austria | 9.1 | 8.5 | 11.1 | -- | -- | -- | -- | -- | -- |
| 3750 | Mödling Austria | 9.1 | 10.1 | 8.7 | 10.2 | 10.7 | -- | -- | -- | -- |
| 3751 |  Cerfontaine Belgium | 9.1 | 9.3 | -- | -- | -- | -- | -- | -- | -- |
| 3752 | La Hulpe Belgium | 9.1 | 9.1 | 7.1 | -- | -- | -- | -- | -- | -- |
| 3753 |  Conklin Canada | 9.1 | 10.5 | 19.4 | 6.3 | 6.5 | 4.6 | 5.7 | -- | -- |
| 3754 | Portage la Prairie Canada | 9.1 | 5.9 | 5.1 | -- | -- | -- | -- | -- | -- |
| 3755 | Teulon Canada | 9.1 | 7.5 | -- | -- | -- | -- | -- | -- | -- |
| 3756 | Prince Edward Canada | 9.1 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3757 | Vaughan Canada | 9.1 | 8.9 | -- | -- | -- | -- | -- | -- | -- |
| 3760 |  Drage Croatia | 9.1 | 11.7 | 12.5 | -- | -- | -- | -- | -- | -- |
| 3761 |  Chrastava Czech Republic | 9.1 | 9.2 | 7.7 | -- | -- | -- | -- | -- | -- |
| 3762 |  Rennes France | 9.1 | 7.9 | 8.9 | 12 | 9.5 | 8.5 | -- | -- | -- |
| 3763 | Épinal France | 9.1 | 8 | 6.5 | 7.8 | 8.7 | -- | -- | -- | -- |
| 3764 | Grandvilliers France | 9.1 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3765 | Rambouillet France | 9.1 | 7.4 | 8.3 | 9.1 | 9.5 | 7.8 | 8.4 | 11.1 | 7.9 |
| 3766 | Le Havre France | 9.1 | 8.6 | 8.7 | 11.5 | 10.9 | 8.4 | 9.7 | 10 | 10.1 |
| 3767 |  Reutlingen Germany | 9.1 | 8 | 7.9 | 10 | 9 | 8.5 | 11.9 | 12.7 | 14.5 |
| 3768 | Weiden in der Oberpfalz Germany | 9.1 | 10.3 | 10.3 | 12.2 | 10 | 10.3 | 10.6 | -- | -- |
