2017-2025
World's most polluted cities | IQAir
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 6638 |  Englewood USA | 6.6 | 5.1 | 6.4 | 4.4 | 10.2 | -- | -- | -- | -- |
| 6639 | Mansfield Center USA | 6.6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 6640 | Stamford USA | 6.6 | 6 | 9.1 | 7.4 | -- | -- | -- | -- | -- |
| 6641 | Waterbury USA | 6.6 | 6.2 | 7.4 | 7.7 | 8.8 | 8.1 | 7.8 | 8.7 | 7.4 |
| 6642 | Weston USA | 6.6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 6643 | Felton USA | 6.6 | 7 | 9.9 | 6.3 | 7.1 | 6.8 | 7.5 | 6.6 | 6.9 |
| 6644 | Tallahassee USA | 6.6 | 6.2 | 9.2 | 9.1 | 9.1 | 9 | 10.6 | 8.5 | 9.8 |
| 6645 | Hope USA | 6.6 | 9.2 | -- | -- | -- | -- | -- | -- | -- |
| 6646 | Frenchville USA | 6.6 | 6.7 | -- | -- | -- | -- | -- | -- | -- |
| 6647 | Attleboro USA | 6.6 | 8.4 | 15.8 | 5.3 | 8.1 | -- | -- | -- | -- |
| 6648 | Remer USA | 6.6 | 4.3 | -- | -- | -- | -- | -- | -- | -- |
| 6649 | Neosho USA | 6.6 | 6.6 | 10.1 | 8 | 2.5 | -- | -- | -- | -- |
| 6650 | Martin City USA | 6.6 | 7.3 | 9.5 | 9.2 | -- | -- | -- | -- | -- |
| 6651 | Whitefish USA | 6.6 | 7 | 10 | 9.2 | 13.7 | -- | -- | -- | -- |
| 6652 | Franklin USA | 6.6 | 6.5 | -- | -- | -- | -- | -- | -- | -- |
| 6653 | Middlesex County USA | 6.6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 6654 | Armonk USA | 6.6 | 5.2 | 8.6 | 7.5 | 10 | 9.6 | 9.9 | -- | -- |
| 6655 | Brewster Heights USA | 6.6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 6656 | Newburgh USA | 6.6 | 5.8 | 7.4 | 6.4 | 7.8 | 6.7 | 6.7 | 6.8 | 6.6 |
| 6657 | Rocky Point USA | 6.6 | 6.1 | 9.5 | -- | -- | -- | -- | -- | -- |
| 6658 | Syracuse USA | 6.6 | 5.7 | 9.3 | -- | -- | -- | -- | -- | -- |
| 6659 | Troy USA | 6.6 | 6.4 | 9.9 | 8.8 | -- | -- | -- | -- | -- |
| 6660 | West End USA | 6.6 | 5.9 | 9.1 | -- | -- | -- | -- | -- | -- |
| 6661 | Asheville USA | 6.6 | 7 | 8.8 | 7.2 | 9.6 | 8.2 | 10.2 | 6.7 | 7.5 |
| 6662 | Roland USA | 6.6 | 7.5 | 8.1 | 7.1 | 7.7 | 5.9 | 6.3 | -- | -- |
| 6663 | Lyons USA | 6.6 | 6.1 | 7.4 | 6.8 | 5.8 | 10.8 | -- | -- | -- |
| 6664 | Sweet Home USA | 6.6 | 4.9 | 5.9 | 6.8 | 6.9 | 13.1 | 7.5 | 8.2 | 8.9 |
| 6665 | Terrebonne USA | 6.6 | 8.1 | 11.8 | 8.2 | 13 | -- | -- | -- | -- |
| 6666 | Three Rivers USA | 6.6 | 11.3 | 12.6 | 10.1 | 8 | -- | -- | -- | -- |
| 6667 | Avella USA | 6.6 | 6.2 | -- | -- | -- | -- | -- | -- | -- |
| 6668 | Berwyn USA | 6.6 | 6.6 | 9.3 | -- | -- | -- | -- | -- | -- |
| 6669 | Jersey Shore USA | 6.6 | 6.4 | 6.8 | 7.3 | 9.4 | -- | -- | -- | -- |
| 6670 | Waynesburg USA | 6.6 | 6.4 | 8.2 | 6.8 | 8.3 | 7.1 | 8.6 | 6.4 | 8.2 |
| 6671 | Custer USA | 6.6 | 5.3 | -- | -- | -- | -- | -- | -- | -- |
| 6672 | Bristol USA | 6.6 | 6.4 | 9.3 | 7.3 | 12.6 | -- | -- | -- | -- |
| 6673 | Briarcliff USA | 6.6 | 7.3 | 8.6 | 5.1 | -- | -- | -- | -- | -- |
| 6674 | Cedar Park USA | 6.6 | 7.1 | 8.9 | 7.7 | 9.2 | 7.7 | 8.8 | -- | -- |
| 6675 | Deer Park USA | 6.6 | 7.4 | 11.4 | 11.2 | 12 | 10.6 | 7.5 | 8 | 8 |
| 6676 | Gunter USA | 6.6 | 7 | 9.7 | 9.9 | 10.8 | -- | -- | -- | -- |
| 6677 | Helotes USA | 6.6 | 8.4 | 9.3 | 9.1 | 11 | 9.9 | 10.9 | -- | -- |
| 6678 | Lindon USA | 6.6 | 6.2 | 5.2 | 6.1 | 9.1 | 8 | 6 | 6.7 | 7.4 |
| 6679 | Caledonia USA | 6.6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 6680 | Big Stone Gap USA | 6.6 | 7.3 | 7.1 | -- | -- | -- | -- | -- | -- |
| 6681 | Charlottesville USA | 6.6 | 6.6 | 9.4 | 7.7 | 7.7 | 6.9 | -- | -- | -- |
| 6682 | Chesapeake USA | 6.6 | 6.5 | 9 | -- | -- | -- | -- | -- | -- |
| 6683 | Fairfax Station USA | 6.6 | 6.1 | 9 | 7.5 | -- | -- | -- | -- | -- |
| 6684 | Lake Monticello USA | 6.6 | 6.4 | 10.8 | -- | -- | -- | -- | -- | -- |
| 6685 | Lakeside USA | 6.6 | 6.7 | 9.3 | 7.7 | -- | -- | -- | -- | -- |
| 6686 | Springfield USA | 6.6 | 6.5 | 10 | 9.4 | 12.6 | -- | -- | -- | -- |
| 6687 | Country Homes USA | 6.6 | 6.1 | 12.8 | 14.6 | 14.2 | -- | -- | -- | -- |
