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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2817 |  Gladstone USA | 5.8 | 5.5 | 8 | 11.2 | 8.9 | -- | -- | -- | -- |
| 2818 | Pendleton USA | 5.8 | 6.1 | 7.7 | 8.1 | 7.9 | 12.1 | 8.2 | 8.9 | 9.9 |
| 2819 | Roseburg USA | 5.8 | 5.2 | 10.3 | 10.8 | 7.7 | 12 | 7.3 | 8.4 | 9.5 |
| 2820 | New Milford USA | 5.8 | 5.1 | 6 | 6.6 | -- | -- | -- | -- | -- |
| 2821 | Westerly USA | 5.8 | 5.5 | 9.4 | -- | -- | -- | -- | -- | -- |
| 2822 | Greenville USA | 5.8 | 5.7 | 9.9 | 9.6 | 12.1 | -- | -- | -- | -- |
| 2823 | Sugar Land USA | 5.8 | 8 | 7.6 | -- | -- | -- | -- | -- | -- |
| 2824 | Bluffdale USA | 5.8 | 6.6 | 8.6 | 7.8 | 11.2 | 8.6 | 6.8 | -- | -- |
| 2825 | Mount Pleasant USA | 5.8 | 5 | 4.1 | 4.5 | -- | -- | -- | -- | -- |
| 2826 | Sandy USA | 5.8 | 6.4 | 6 | 6.1 | 9.6 | 7.3 | 5.6 | -- | -- |
| 2827 | Arlington USA | 5.8 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2828 | Ashburn USA | 5.8 | 6.2 | 10 | 7.7 | -- | -- | -- | -- | -- |
| 2829 | Burbank USA | 5.8 | 5.2 | 4.6 | 7.8 | 8.1 | -- | -- | -- | -- |
| 2830 | Lake Shore USA | 5.8 | 5.1 | 7.7 | 11.3 | 7.8 | -- | -- | -- | -- |
| 2831 | Lakewood USA | 5.8 | 5.3 | 6.4 | 9.3 | 6.1 | -- | -- | -- | -- |
| 2832 | North Creek USA | 5.8 | 4.8 | 6.5 | 18 | 7.1 | -- | -- | -- | -- |
| 2833 | Okanogan USA | 5.8 | 5 | 8.9 | 7.9 | 12.6 | 9.4 | 8.4 | -- | -- |
| 2834 | Starbuck USA | 5.8 | 8 | -- | -- | -- | -- | -- | -- | -- |
| 2835 | Lyman USA | 5.8 | 6.2 | 6 | -- | -- | -- | -- | -- | -- |
| 2836 |  Castor Canada | 5.7 | 6.1 | 13 | -- | -- | -- | -- | -- | -- |
| 2837 | Chase Canada | 5.7 | 6.5 | 13.2 | 9.9 | 12.9 | -- | -- | -- | -- |
| 2838 | Forest Grove Canada | 5.7 | 7.7 | -- | -- | -- | -- | -- | -- | -- |
| 2839 | Hudson's Hope Canada | 5.7 | 5.4 | 13.7 | -- | -- | -- | -- | -- | -- |
| 2840 | McBride Canada | 5.7 | 5.4 | 12 | -- | -- | -- | -- | -- | -- |
| 2841 | Qualicum Beach Canada | 5.7 | 5 | 8.1 | 10.1 | 10.4 | 12.6 | 10 | -- | -- |
| 2842 | Watch Lake Canada | 5.7 | 6.1 | 10.1 | -- | -- | -- | -- | -- | -- |
| 2843 | Botwood Canada | 5.7 | 5.8 | 9 | 6.1 | 10.4 | -- | -- | -- | -- |
| 2844 | Cantley Canada | 5.7 | 4.7 | 7.5 | -- | -- | -- | -- | -- | -- |
| 2845 | Maniwaki Canada | 5.7 | 5.6 | 9.8 | 6.8 | -- | -- | -- | -- | -- |
| 2846 | North Pole USA | 5.7 | 7.3 | 7.5 | 12 | 9.6 | -- | 14.7 | 10.9 | 14.9 |
| 2847 | Cottonwood USA | 5.7 | 5.4 | 4 | 2.2 | 5.4 | -- | -- | -- | -- |
| 2848 | San Carlos USA | 5.7 | 6.8 | 5.2 | 4.3 | 6.5 | -- | -- | -- | -- |
| 2849 | Surprise USA | 5.7 | 5.5 | 4.9 | 7.2 | 6.1 | 6.5 | 4.1 | -- | -- |
| 2850 | Bend USA | 5.7 | 6.1 | -- | -- | -- | -- | -- | -- | -- |
| 2851 | Borrego Springs USA | 5.7 | 4.7 | 3.8 | 1.8 | -- | -- | -- | -- | -- |
| 2852 | Cameron Park USA | 5.7 | 5.6 | 7.1 | 8.7 | 17.3 | 17 | 8.3 | -- | -- |
| 2853 | Concord USA | 5.7 | 5.3 | 6.4 | 7.8 | 9.2 | 11.7 | 6.5 | 13.3 | 12.4 |
| 2854 | Felton USA | 5.7 | 5.4 | 6.6 | 7.1 | 8.7 | 11.3 | 5.9 | 7.7 | 7.7 |
| 2855 | Fort Irwin USA | 5.7 | 6.1 | 4.3 | 2.6 | 6.3 | -- | -- | -- | -- |
| 2856 | Jackson USA | 5.7 | 5.4 | 6.7 | 7.1 | 11.4 | 15 | 6.2 | -- | -- |
| 2857 | Meiners Oaks USA | 5.7 | 4.7 | -- | -- | -- | -- | -- | -- | -- |
| 2858 | Stevenson Ranch USA | 5.7 | 5.9 | 8.3 | 6.1 | 9.2 | 11.7 | 8.8 | -- | -- |
| 2860 | Zayante USA | 5.7 | 5.9 | -- | -- | -- | -- | -- | -- | -- |
| 2861 | Clifton USA | 5.7 | 5 | 3.7 | 3.8 | 8.1 | 8.1 | 4.4 | -- | -- |
| 2862 | Longmont USA | 5.7 | 5.8 | 6.7 | 5.4 | 10.3 | 9.7 | 7.8 | -- | -- |
| 2863 | Enfield USA | 5.7 | 4.8 | 8.7 | 6.4 | -- | -- | -- | -- | -- |
| 2864 | Sarasota USA | 5.7 | 5.3 | 7.2 | 6.9 | 11.3 | 8.8 | -- | -- | -- |
| 2865 | Grangeville USA | 5.7 | 7.9 | 7.1 | 8.3 | 9 | 8.7 | 5.8 | 6.4 | 8.8 |
| 2866 | McCall USA | 5.7 | 8.9 | 6.3 | 9.1 | 12.9 | 10.3 | 7.4 | 7.8 | 11 |
| 2867 | Augusta USA | 5.7 | 6 | 8.1 | -- | -- | -- | -- | -- | -- |
