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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2615 |  Pacheco USA | 6 | 5.6 | 6.9 | 8.9 | 11.7 | -- | -- | -- | -- |
| 2616 | Palm Springs USA | 6 | 6.2 | 5.7 | 3.5 | -- | -- | -- | -- | -- |
| 2617 | Plumas Lake USA | 6 | 6.5 | 8.3 | 14.3 | -- | -- | -- | -- | -- |
| 2619 | Ventura USA | 6 | 5.4 | 6.6 | 7.6 | 9.7 | 10.2 | 9.2 | 8.3 | 9.6 |
| 2620 | Del Norte USA | 6 | 5.2 | 4.3 | 3.3 | 6.1 | -- | -- | -- | -- |
| 2621 | Florence USA | 6 | 7.5 | 6.4 | 4.9 | 8.7 | -- | -- | -- | -- |
| 2622 | Greenwood Village USA | 6 | 5.8 | -- | -- | -- | -- | -- | -- | -- |
| 2623 | Saguache County USA | 6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2624 | Westcliffe USA | 6 | 6.2 | 6.2 | -- | -- | -- | -- | -- | -- |
| 2625 | Bristol USA | 6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2626 | Tampa USA | 6 | 6.1 | 7.8 | 8 | 9.2 | 8.8 | 8.7 | 8.6 | 9.2 |
| 2627 | Winter Park USA | 6 | 6.7 | 7.8 | 7.1 | 7.4 | 6.9 | 7.2 | 7.5 | 8.9 |
| 2628 | Bonners Ferry USA | 6 | 6 | 8.5 | 10.5 | 10.7 | -- | -- | -- | -- |
| 2629 | Carter Lake USA | 6 | 6.6 | 12.4 | 12.1 | 14.1 | -- | -- | -- | -- |
| 2630 | Brownell USA | 6 | 7.1 | 8.3 | 7.2 | 8 | 6 | 6 | 5.6 | 4.8 |
| 2631 | Hutchinson USA | 6 | 7.3 | 10.8 | 8.5 | 12 | -- | -- | -- | -- |
| 2632 | Shawnee USA | 6 | 9.2 | 3.1 | 1.9 | 12.7 | 11.2 | -- | -- | -- |
| 2633 | River Ridge USA | 6 | 5.7 | 10.5 | 9.7 | 9.3 | 9 | 9.7 | -- | -- |
| 2634 | Portland USA | 6 | 5.6 | 7.1 | 5.7 | 8.2 | 7.5 | 8.7 | 7 | 7.3 |
| 2635 | Cambridge USA | 6 | 5.8 | 7.5 | 7 | 6.4 | 4.7 | 6.1 | 6.2 | 8.4 |
| 2636 | Derwood USA | 6 | 5.9 | 6.6 | 7.4 | -- | -- | -- | -- | -- |
| 2637 | Princess Anne USA | 6 | 6.3 | 9.1 | 7.4 | 8.2 | -- | -- | -- | -- |
| 2638 | Chelmsford USA | 6 | 5.6 | 7.7 | 7.1 | 7.2 | -- | 7.1 | -- | -- |
| 2639 | Needham USA | 6 | 5.3 | 6.6 | 4.4 | -- | -- | -- | -- | -- |
| 2640 | Northbridge USA | 6 | 6.7 | -- | -- | -- | -- | -- | -- | -- |
| 2641 | Shrewsbury USA | 6 | 5.8 | 9.4 | -- | -- | -- | -- | -- | -- |
| 2642 | Swampscott USA | 6 | 6.5 | 8.6 | 7.1 | 9.2 | -- | -- | -- | -- |
| 2643 | Lutsen USA | 6 | 4.1 | 7.9 | 4.1 | -- | -- | -- | -- | -- |
| 2644 | Malta USA | 6 | 5.8 | 7.9 | 5.4 | 7.1 | 7.5 | 5.1 | 6.3 | 7 |
| 2645 | Walkerville USA | 6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2646 | Minden USA | 6 | 6.3 | -- | -- | -- | -- | -- | -- | -- |
| 2647 | Grafton County USA | 6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2648 | Hoboken USA | 6 | 7.4 | 11.3 | 9.9 | 11.8 | 10.3 | 11.6 | -- | -- |
| 2649 | Spring Lake USA | 6 | 6 | 10.4 | -- | -- | -- | -- | -- | -- |
| 2650 | Addison USA | 6 | 4.7 | 8.8 | 5.9 | 7 | 5.8 | 6.2 | -- | -- |
| 2651 | Ithaca USA | 6 | 5.5 | 8.4 | 6.2 | 8.5 | 7.5 | 7.9 | -- | -- |
| 2652 | Stamford USA | 6 | 5.5 | 9.1 | -- | -- | -- | -- | -- | -- |
| 2653 | Millers Creek USA | 6 | 4.7 | 7.5 | 7.1 | 9.8 | 7.9 | -- | -- | -- |
| 2654 | Eagle Point USA | 6 | 6.7 | 9.8 | 8.1 | 21.1 | -- | -- | -- | -- |
| 2655 | Sandy USA | 6 | 4.6 | 5.6 | 5.6 | 7.9 | 16.3 | -- | -- | -- |
| 2656 | Vernonia USA | 6 | 5.3 | 9.4 | 7.9 | 7.6 | 10.9 | 9.8 | -- | -- |
| 2657 | Monroe USA | 6 | 5.9 | 7.1 | 6.7 | 7.7 | 6.8 | 7.4 | 6.9 | 7.8 |
| 2658 | Aberdeen USA | 6 | 5.4 | 7.1 | 4.7 | 7.8 | -- | -- | -- | -- |
| 2659 | Sioux Falls USA | 6 | 4.7 | 7.1 | 5.7 | 12.8 | 8.9 | 9.2 | 5.7 | 6 |
| 2660 | Bartonville USA | 6 | 6.9 | 9.6 | 9.2 | 12 | -- | -- | -- | -- |
| 2661 | Fair Oaks Ranch USA | 6 | 6.5 | 7.9 | 5.1 | -- | -- | -- | -- | -- |
| 2662 | Flower Mound USA | 6 | 6.4 | 9.2 | 8.4 | 10 | 9.1 | 10 | -- | -- |
| 2663 | Lake Dallas USA | 6 | 6.6 | 8.4 | 7.8 | 12.2 | -- | -- | -- | -- |
| 2664 | Richmond USA | 6 | 6 | 9.8 | 9.3 | 9.9 | -- | -- | -- | -- |
| 2665 | Enoch USA | 6 | 4.5 | 5 | 5.7 | 6.6 | 5.4 | 4.6 | -- | -- |
