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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 7907 |  Weston USA | 5.3 | 5 | 8.6 | -- | -- | -- | -- | -- | -- |
| 7908 | Westport USA | 5.3 | 4.6 | -- | -- | -- | -- | -- | -- | -- |
| 7909 | Dearborn Heights USA | 5.3 | 6.8 | 13.2 | 10.5 | 11.8 | 11.2 | 11 | -- | -- |
| 7910 | L'Anse USA | 5.3 | 3.3 | 7.8 | 4.2 | -- | -- | -- | -- | -- |
| 7911 | Billings USA | 5.3 | 6.1 | 6.9 | 6.5 | 10.4 | 7.1 | 6.5 | 8.7 | 8.7 |
| 7912 | Beatty USA | 5.3 | 5.2 | 2.8 | 1.1 | 7.6 | -- | -- | -- | -- |
| 7913 | Silver Springs USA | 5.3 | 5.4 | 8.4 | 3.8 | -- | -- | -- | -- | -- |
| 7914 | Sparks USA | 5.3 | 5.4 | 5.5 | 7.4 | 13.5 | 10.7 | 5.6 | 7.7 | 8.4 |
| 7915 | Meredith USA | 5.3 | 4.9 | 6.2 | 4.9 | 8 | -- | -- | -- | -- |
| 7916 | Dover Plains USA | 5.3 | 5.3 | 7.9 | 7.1 | 8.7 | -- | -- | -- | -- |
| 7917 | Keeseville USA | 5.3 | 4.8 | 7.3 | 5.2 | 7.6 | -- | -- | -- | -- |
| 7918 | La Grange USA | 5.3 | 5.1 | 10.7 | 7 | -- | -- | -- | -- | -- |
| 7919 | Creswell USA | 5.3 | 5.3 | 6.8 | 9.4 | 7.8 | 7.8 | 9.5 | -- | -- |
| 7920 | Culver USA | 5.3 | 7 | 14 | 1.6 | 5.3 | -- | -- | -- | -- |
| 7921 | Hillsboro USA | 5.3 | 4.6 | 6.5 | 9.7 | 7.1 | 9.7 | 6.6 | 8.1 | 7.8 |
| 7922 | Newberg USA | 5.3 | 4.8 | 6.9 | 9.1 | 7.2 | -- | -- | -- | -- |
| 7923 | Tigard USA | 5.3 | 4.8 | 6.6 | 9.7 | 7.4 | -- | -- | -- | -- |
| 7924 | Hawley USA | 5.3 | 5.4 | -- | -- | -- | -- | -- | -- | -- |
| 7925 | Alvin USA | 5.3 | -- | -- | -- | -- | -- | -- | -- | -- |
| 7926 | Leander USA | 5.3 | 5.8 | 8.1 | 8.6 | 10.3 | 9.1 | 10.2 | -- | -- |
| 7927 | Southside Place USA | 5.3 | 11.7 | -- | -- | -- | -- | -- | -- | -- |
| 7928 | Alpine USA | 5.3 | 5.4 | 5 | 6 | 8.8 | 7.3 | 5.5 | -- | -- |
| 7929 | Erda USA | 5.3 | 6.3 | 5.3 | 6.1 | 9.8 | 7.6 | 6.2 | 7.6 | 6.9 |
| 7930 | Heber USA | 5.3 | -- | -- | -- | -- | -- | -- | -- | -- |
| 7931 | Layton USA | 5.3 | 6.3 | 5.8 | 6.6 | 9.7 | 7.4 | 5.8 | -- | -- |
| 7932 | North Salt Lake USA | 5.3 | 6.4 | 5.9 | 4.1 | 10 | 7.9 | 6.1 | -- | -- |
| 7933 | Virgin USA | 5.3 | -- | -- | -- | -- | -- | -- | -- | -- |
| 7934 | West Jordan USA | 5.3 | 3.9 | 6.1 | 5.9 | 9.6 | 8.4 | 6.6 | -- | -- |
| 7935 | Woodland Hills USA | 5.3 | 4.3 | 3.6 | 3.5 | 9 | -- | -- | -- | -- |
| 7936 | Bonney Lake USA | 5.3 | 4.6 | 6.9 | 10.9 | 7.5 | -- | -- | -- | -- |
| 7937 | Brush Prairie USA | 5.3 | 5 | 7.4 | 10.4 | 9.1 | -- | -- | -- | -- |
| 7938 | Gleed USA | 5.3 | 5.9 | 12 | 11.7 | 12.5 | -- | -- | -- | -- |
| 7939 | Kelso USA | 5.3 | 4.8 | -- | -- | -- | -- | -- | -- | -- |
| 7940 | Tumwater USA | 5.3 | 4.1 | 6 | 10.4 | 7 | -- | -- | -- | -- |
| 7941 |  la Massana Andorra | 5.2 | 3.3 | -- | -- | -- | -- | -- | -- | -- |
| 7942 |  Monash Australia | 5.2 | 7.2 | 7 | -- | -- | -- | -- | -- | -- |
| 7943 | Maryborough Australia | 5.2 | 5.8 | 6.5 | -- | -- | -- | -- | -- | -- |
| 7944 | Woolloongabba Australia | 5.2 | 5.8 | 7 | 6.3 | 6.3 | 6.7 | 10.1 | -- | -- |
| 7945 | Box Hill Australia | 5.2 | 6.4 | 5.4 | -- | -- | -- | -- | -- | -- |
| 7946 |  Brasileia Brazil | 5.2 | 18 | 14.8 | 17.6 | 15.4 | 18.6 | -- | -- | -- |
| 7947 |  Banff Canada | 5.2 | 5.3 | 9.2 | 6 | 6.5 | -- | -- | -- | -- |
| 7948 | Creston Canada | 5.2 | 5.4 | 8.6 | 13.7 | 9.8 | -- | -- | -- | -- |
| 7949 | Langley Canada | 5.2 | 4.7 | 5.8 | -- | -- | -- | -- | -- | -- |
| 7950 | Mission Canada | 5.2 | 4.7 | 5.6 | 7.3 | 6 | 7.3 | 6.4 | -- | -- |
| 7951 | Okanagan Canada | 5.2 | 5.3 | 11.6 | 9.7 | 23.6 | -- | -- | -- | -- |
| 7952 | Parksville Canada | 5.2 | 4.3 | 6.1 | 7.8 | 6.8 | 9 | 9 | -- | -- |
| 7953 | Port Moody Canada | 5.2 | 4.5 | 3.7 | -- | -- | -- | -- | -- | -- |
| 7954 | Walnut Grove Canada | 5.2 | 7.3 | -- | -- | -- | -- | -- | -- | -- |
| 7955 |  Sillamäe Estonia | 5.2 | 6.2 | 6 | -- | -- | -- | -- | -- | -- |
| 7956 |  Kotka Finland | 5.2 | 5.2 | 3.7 | 5.2 | 6 | 5.4 | 5 | -- | -- |
