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
| Rank | City | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2666 |  Hill Air Force Base USA | 6 | 7.3 | 6.8 | 7 | 11.4 | 9.9 | 6.8 | -- | -- |
| 2667 | Provo USA | 6 | 6.2 | 6.1 | 6.7 | 9.5 | 7.7 | 5.2 | -- | -- |
| 2668 | Roosevelt USA | 6 | 5.9 | 8.3 | 6.2 | 7.6 | 7.4 | -- | -- | -- |
| 2669 | Saratoga Springs USA | 6 | 6.7 | 7.5 | 9.7 | -- | -- | -- | -- | -- |
| 2670 | Spanish Fork USA | 6 | 6 | 5.6 | 5.9 | 9 | 7.5 | 5 | 8.5 | -- |
| 2671 | Wellsville USA | 6 | 7.9 | 9.2 | 8 | 12.2 | 10.6 | 7.8 | -- | -- |
| 2672 | North Hartland USA | 6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2673 | West Dummerston USA | 6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2674 | Christiansburg USA | 6 | 5.3 | 5.4 | 7.8 | 6.9 | -- | -- | -- | -- |
| 2675 | Crozet USA | 6 | 8.2 | 14.4 | 14.2 | 13.3 | -- | -- | -- | -- |
| 2676 | Hampton USA | 6 | 6.4 | 9.7 | 8.8 | 10 | 8.1 | 9.4 | 6.3 | 8.2 |
| 2677 | Bingen USA | 6 | 7 | -- | -- | -- | -- | -- | -- | -- |
| 2678 | City of Sammamish USA | 6 | 3.5 | -- | -- | -- | -- | -- | -- | -- |
| 2679 | Kennewick USA | 6 | 5.8 | 7.9 | 8.5 | 9.1 | 9 | 6.5 | 8.2 | 11.7 |
| 2680 | Lakeland South USA | 6 | 5.3 | 9 | -- | -- | -- | -- | -- | -- |
| 2681 | Madison USA | 6 | 2.9 | 5.8 | -- | -- | -- | -- | -- | -- |
| 2682 | Green River USA | 6 | 7.1 | 6.5 | 4.7 | 5.1 | 4 | -- | -- | -- |
| 2683 |  Caroline Canada | 5.9 | 5.6 | 9.4 | -- | -- | -- | -- | -- | -- |
| 2684 | 100 Mile House Canada | 5.9 | 8.1 | -- | -- | -- | -- | -- | -- | -- |
| 2685 | Ashcroft Canada | 5.9 | 7.2 | 6.5 | -- | -- | -- | -- | -- | -- |
| 2686 | Vanderhoof Canada | 5.9 | 6.8 | 16.6 | 8.8 | 8.6 | 9.5 | -- | -- | -- |
| 2687 | Edmundston Canada | 5.9 | 5.7 | 7.9 | 6.8 | 7.6 | 5.9 | -- | -- | -- |
| 2688 | Greater Sudbury Canada | 5.9 | 5 | 9 | 5.4 | 5.9 | 5.2 | 5.1 | -- | -- |
| 2689 | Amos Canada | 5.9 | 5 | 12.3 | 6.5 | -- | -- | -- | -- | -- |
| 2690 | La Peche Canada | 5.9 | 4.4 | 8.1 | 5.8 | 5.5 | -- | -- | -- | -- |
| 2691 | Saint-Jean-sur-Richelieu Canada | 5.9 | 5.1 | 7.9 | -- | -- | -- | -- | -- | -- |
| 2692 | Gilbert USA | 5.9 | 5.9 | 4.4 | 4.8 | 7 | 7.6 | 5.3 | -- | -- |
| 2693 | South Tucson USA | 5.9 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2694 | Corning USA | 5.9 | 5.9 | 6.4 | 6.6 | 14.8 | 18.7 | 7.9 | -- | -- |
| 2695 | Dixon Lane-MeadowCreek USA | 5.9 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2696 | El Portal USA | 5.9 | 5.9 | 8.2 | 10.1 | 10.1 | 22.9 | 6.4 | -- | -- |
| 2697 | Fallbrook USA | 5.9 | 6.9 | 7.6 | 6.7 | 8.8 | -- | -- | -- | -- |
| 2698 | Grass Valley USA | 5.9 | 5.1 | 6.1 | 8 | 11.4 | 13.7 | 5.5 | 6.8 | 3.9 |
| 2699 | North Auburn USA | 5.9 | 5.2 | 4.9 | 9.3 | 13.7 | -- | -- | -- | -- |
| 2700 | Oak Run USA | 5.9 | 7.8 | 3.6 | 5 | 16.2 | 17.5 | 5.3 | -- | -- |
| 2701 | Red Bluff USA | 5.9 | 6.8 | 7.3 | 6.5 | 13.6 | 14.8 | 6.5 | 11.1 | 7 |
| 2702 | Sonora USA | 5.9 | 4.9 | 7.4 | 7.1 | 12.9 | 16.4 | -- | -- | -- |
| 2703 | Yosemite Valley USA | 5.9 | 5.7 | 9.2 | 18.3 | 11.9 | 18.6 | 9.5 | 20.4 | 13.3 |
| 2704 | Jefferson USA | 5.9 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2705 | Niwot USA | 5.9 | 6.1 | 8 | 6.3 | 12 | 11.4 | 9 | -- | -- |
| 2706 | Redlands USA | 5.9 | 5.9 | 3.6 | 3.6 | 7.2 | 8.1 | 3.5 | -- | -- |
| 2707 | Clinton USA | 5.9 | 5.3 | 3.1 | -- | -- | -- | -- | -- | -- |
| 2708 | Glastonbury USA | 5.9 | 5.8 | 9.1 | -- | -- | -- | -- | -- | -- |
| 2709 | Altamonte Springs USA | 5.9 | 5.6 | -- | -- | -- | -- | -- | -- | -- |
| 2710 | Davie USA | 5.9 | 5.7 | 7.1 | 6.5 | 7.2 | -- | 7 | 7.2 | 8.7 |
| 2711 | Fort Myers USA | 5.9 | 6.9 | 5 | 7.4 | 7.3 | 7.2 | 7.5 | -- | -- |
| 2712 | West Ridge USA | 5.9 | 6 | 12.3 | 10.2 | -- | -- | -- | -- | -- |
| 2713 | Pikeville USA | 5.9 | 5.9 | 7.8 | 6.9 | 7.7 | 6.6 | 7 | 7.3 | 9.1 |
| 2714 | Clinton USA | 5.9 | 5.6 | 8.6 | 8.5 | -- | -- | -- | -- | -- |
| 2715 | Frostburg USA | 5.9 | 5 | 6 | 5.3 | 5.7 | 4.8 | 5.7 | 6.1 | 6.3 |
