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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 8817 |  Saint Johns USA | 4.2 | 4.6 | 8.4 | 7.6 | -- | -- | -- | -- | -- |
| 8818 | Honolulu County USA | 4.2 | -- | -- | -- | -- | -- | -- | -- | -- |
| 8819 | Kahaluu-Keauhou USA | 4.2 | 1.5 | 3.6 | 3.4 | 5.6 | -- | -- | -- | -- |
| 8820 | Winslow USA | 4.2 | 4.2 | 6.5 | 5.1 | -- | -- | -- | -- | -- |
| 8821 | Centreville USA | 4.2 | 4.8 | 9.8 | -- | -- | -- | -- | -- | -- |
| 8822 | Wilsall USA | 4.2 | 7.1 | -- | -- | -- | -- | -- | -- | -- |
| 8823 | Summerlin South USA | 4.2 | 3.3 | 2.6 | -- | -- | -- | -- | -- | -- |
| 8824 | Verdi USA | 4.2 | 4.9 | 4.9 | 8 | 9.1 | -- | -- | -- | -- |
| 8825 | Clatsop USA | 4.2 | -- | -- | -- | -- | -- | -- | -- | -- |
| 8826 | Detroit USA | 4.2 | 3 | 4.6 | 7.1 | 10.4 | -- | -- | -- | -- |
| 8827 | Florence USA | 4.2 | 3.5 | 4.2 | 5.3 | 3.8 | 6.4 | 5.6 | -- | -- |
| 8828 | Oregon City USA | 4.2 | 4 | 5.5 | 7.4 | 4.5 | -- | -- | -- | -- |
| 8829 | Rowena USA | 4.2 | -- | -- | -- | -- | -- | -- | -- | -- |
| 8830 | Scappoose USA | 4.2 | 3.4 | 6.6 | 9.2 | 9.2 | -- | -- | -- | -- |
| 8831 | Eden USA | 4.2 | 5.5 | 4.8 | 4.9 | 8.2 | 5.8 | 3.7 | -- | -- |
| 8832 | Sundance USA | 4.2 | 4.3 | 3.9 | 3.6 | 9.1 | 7.2 | 3.8 | -- | -- |
| 8833 | Castle Rock USA | 4.2 | 4 | -- | -- | -- | -- | -- | -- | -- |
| 8834 | Eatonville USA | 4.2 | 3.4 | 5.4 | 10.1 | -- | -- | -- | -- | -- |
| 8835 | Edmonds USA | 4.2 | 4 | 5.8 | 9.1 | 6.3 | -- | -- | -- | -- |
| 8836 | Gold Bar USA | 4.2 | 3.2 | 5.4 | 6.9 | -- | -- | -- | -- | -- |
| 8837 | Hansville USA | 4.2 | 3.6 | 4.7 | 6.2 | 5.2 | 7.6 | 6 | -- | -- |
| 8838 | La Center USA | 4.2 | 3.9 | 5.8 | 8.2 | 5.9 | -- | -- | -- | -- |
| 8839 | LaCrosse USA | 4.2 | 4.4 | 5.8 | 5.4 | 5 | -- | 4.5 | 5.7 | 6.4 |
| 8840 | Lynden USA | 4.2 | 4.1 | 8 | 10.2 | 7.4 | 8.2 | 8.5 | -- | -- |
| 8841 | Maltby USA | 4.2 | 3.6 | 5.7 | 11 | 7.2 | -- | -- | -- | -- |
| 8842 | Renton USA | 4.2 | 3.5 | 5.8 | 9.6 | 6 | 6.7 | 5 | -- | -- |
| 8843 | Shelton USA | 4.2 | 3.8 | 5.2 | 7.6 | 5.6 | 9.2 | 7.6 | 9.1 | 11.9 |
| 8844 | Kelly USA | 4.2 | 7.1 | 3.5 | 3.9 | 1.6 | -- | -- | -- | -- |
| 8845 |  Central Coast Australia | 4.1 | 3.8 | 5.4 | 3.4 | 5.6 | -- | -- | -- | -- |
| 8846 | Campbell Town Australia | 4.1 | 4.1 | 3.5 | 3.8 | 4.1 | 5.7 | 5.9 | 6.1 | 6.2 |
| 8847 |  Comox Canada | 4.1 | 3.7 | 6.3 | 3.6 | -- | -- | -- | -- | -- |
| 8848 | Kitimat Canada | 4.1 | 3.5 | 4.6 | 4 | 3.9 | 4.6 | 5.2 | 5.4 | 4.6 |
| 8849 | Grande-Digue Canada | 4.1 | 3.7 | 5.2 | -- | -- | -- | -- | -- | -- |
| 8850 | Moncton Canada | 4.1 | 3.7 | 6.4 | 5.9 | 5.7 | 5.6 | 4.7 | 3.8 | 4.2 |
| 8851 | Dartmouth Canada | 4.1 | 5.9 | -- | -- | -- | -- | -- | -- | -- |
| 8852 | Whitehorse Canada | 4.1 | 3.9 | 5.4 | 3.7 | 6.8 | -- | -- | -- | -- |
| 8853 |  Oulu Finland | 4.1 | 4.4 | 5.1 | 4.8 | 5.3 | 4.9 | 5.3 | 5.9 | 4.8 |
| 8854 | Kuopio Finland | 4.1 | 4.9 | 5.2 | 4.5 | 4.8 | 4.3 | 4.3 | 3.9 | 3.1 |
| 8855 |  Mantes-La-Jolie France | 4.1 | 3 | 2.7 | 1.5 | 13.4 | -- | -- | -- | -- |
| 8856 |  Narvik Norway | 4.1 | 4 | 4.4 | 4.4 | 5.2 | 3.9 | 5.2 | 4.6 | 3.9 |
| 8857 |  Pontevedra Spain | 4.1 | 5 | 4.4 | -- | -- | -- | -- | -- | -- |
| 8858 |  Häggvik Sweden | 4.1 | 4.5 | 4.7 | 5.7 | 5.2 | -- | 5.6 | -- | -- |
| 8859 | Albion USA | 4.1 | 3.1 | 5.1 | 5.5 | 5 | -- | 4.6 | -- | -- |
| 8860 | Atherton USA | 4.1 | 3.9 | 5.1 | 6.7 | 7.3 | 11.9 | -- | -- | -- |
| 8861 | Brookdale USA | 4.1 | 4.1 | 7 | 7.1 | 8.4 | -- | -- | -- | -- |
| 8862 | Clearlake Riviera USA | 4.1 | 4.1 | -- | -- | -- | -- | -- | -- | -- |
| 8863 | Corte Madera USA | 4.1 | 4 | 4.8 | 6.1 | 7.3 | 9.9 | 6.1 | -- | -- |
| 8864 | Emerald Lake Hills USA | 4.1 | 4 | 6.3 | 8.3 | 8 | -- | -- | -- | -- |
| 8865 | Fortuna USA | 4.1 | 3.5 | 6.5 | 6.6 | 7 | -- | 6.7 | -- | -- |
| 8866 | Lucas Valley-Marinwood USA | 4.1 | 4 | 4.9 | 5.9 | 7.5 | -- | -- | -- | -- |
