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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2969 |  Indiana USA | 5.6 | 5.7 | 6.5 | 1.4 | 11 | 9.1 | 10.6 | -- | -- |
| 2970 | Hot Springs USA | 5.6 | 6.3 | 6.2 | -- | -- | -- | -- | -- | -- |
| 2971 | Rapid City USA | 5.6 | 7.2 | 7.7 | 6.2 | 8.8 | 7.9 | 8 | 7.2 | 8.5 |
| 2972 | Bertram USA | 5.6 | 7.2 | 9.7 | 8.8 | -- | -- | -- | -- | -- |
| 2973 | Lago Vista USA | 5.6 | 7 | 8.7 | 7.2 | 9.7 | -- | -- | -- | -- |
| 2974 | American Fork USA | 5.6 | 5.7 | 6.3 | 6.5 | 9.9 | 8.5 | 5.7 | -- | -- |
| 2975 | Cottonwood Heights USA | 5.6 | 5.7 | 6.3 | 5.9 | 9.5 | 8.2 | 5.9 | -- | -- |
| 2976 | Herriman USA | 5.6 | 6.3 | 6.1 | 6.5 | 9 | 7.9 | 6.2 | 6.7 | -- |
| 2977 | Lake Point USA | 5.6 | 7.3 | 7.2 | 7.8 | -- | -- | -- | -- | -- |
| 2978 | Magna USA | 5.6 | 7.3 | 6.7 | 7.4 | 11.7 | -- | 9 | -- | -- |
| 2979 | Providence USA | 5.6 | 7.2 | 8.5 | 8.8 | 13.4 | -- | -- | -- | -- |
| 2980 | Bealeton USA | 5.6 | 5.3 | 9 | 7.2 | -- | -- | -- | -- | -- |
| 2981 | Bristol USA | 5.6 | 6.7 | 11.2 | 9.3 | 12 | -- | -- | -- | -- |
| 2982 | Clark USA | 5.6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2983 | Kent USA | 5.6 | 4.9 | 7.5 | 11.3 | 7.4 | 9.4 | 6.6 | 7.3 | 7.9 |
| 2984 | Lake Stickney USA | 5.6 | 4.7 | 6.5 | -- | -- | -- | -- | -- | -- |
| 2985 | Lewisville USA | 5.6 | 5.1 | 6.9 | 1.6 | -- | -- | -- | -- | -- |
| 2986 | Nooksack USA | 5.6 | 4.7 | 8.6 | 13.5 | -- | -- | -- | -- | -- |
| 2987 | North Puyallup USA | 5.6 | 5 | 8 | -- | -- | -- | -- | -- | -- |
| 2988 | Riverton USA | 5.6 | 7 | 7.5 | -- | -- | -- | -- | -- | -- |
| 2989 | Soap Lake USA | 5.6 | 5.6 | 7.1 | -- | -- | -- | -- | -- | -- |
| 2990 | Stevens USA | 5.6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2991 | Tonasket USA | 5.6 | 5.1 | 10 | 8.9 | 15.4 | 10.1 | 6.2 | -- | -- |
| 2992 | Yelm USA | 5.6 | 5 | 8.3 | 11 | 8.4 | 11.2 | 9.8 | -- | -- |
| 2993 | Rhinelander USA | 5.6 | 3.3 | 8.7 | 4.1 | -- | -- | -- | -- | -- |
| 2994 |  Telkwa Canada | 5.5 | 6.1 | 9.6 | 13.7 | 13.1 | -- | 11.4 | -- | -- |
| 2995 | Niagara Falls Canada | 5.5 | 6.4 | 12.7 | 10.4 | -- | -- | -- | -- | -- |
| 2996 | Newport Canada | 5.5 | 5.1 | 6.1 | -- | -- | -- | -- | -- | -- |
| 2997 | Sainte-Anne-des-Monts Canada | 5.5 | 5.3 | 6.5 | -- | -- | -- | -- | -- | -- |
| 2998 | Senneterre Canada | 5.5 | 3.9 | 7 | 4.2 | 6.1 | -- | -- | -- | -- |
| 2999 |  Port of Spain Trinidad and Tobago | 5.5 | 6 | 5.7 | 5 | 7.2 | -- | -- | -- | -- |
| 3000 | Amesti USA | 5.5 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3001 | Butte USA | 5.5 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3003 | Mineral USA | 5.5 | 10.8 | 2.8 | 8.8 | -- | -- | -- | -- | -- |
| 3004 | Nord USA | 5.5 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3005 | Phoenix Lake USA | 5.5 | 5.2 | 6.4 | 6 | 11 | -- | -- | -- | -- |
| 3006 | Pleasant Hill USA | 5.5 | 5.3 | 6.5 | 7.9 | 9.4 | -- | -- | -- | -- |
| 3007 | Twain Harte USA | 5.5 | 4.9 | 7 | 6.5 | 11.7 | 20.7 | 8.3 | -- | -- |
| 3008 | Twentynine Palms USA | 5.5 | 6 | 3.9 | 2.3 | 4.3 | 6.3 | 3.9 | -- | -- |
| 3009 | Vacaville USA | 5.5 | 5 | 6 | 7.3 | 9.3 | 11.2 | 5.3 | 8.7 | 8.6 |
| 3010 | West Bishop USA | 5.5 | 4.8 | 3.7 | 2.4 | 11.3 | -- | -- | -- | -- |
| 3011 | Boulder County USA | 5.5 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3012 | Castle Rock USA | 5.5 | 5.4 | 5.5 | 3.9 | 8.7 | -- | -- | -- | -- |
| 3013 | Dakota Ridge USA | 5.5 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3014 | Lyons USA | 5.5 | 5.5 | 5.4 | 3.6 | 9.8 | -- | -- | -- | -- |
| 3015 | New Castle USA | 5.5 | 4.9 | 3.7 | 3.2 | 7.3 | -- | -- | -- | -- |
| 3016 | Silt USA | 5.5 | 5.3 | 3.6 | 2.9 | 4.9 | -- | -- | -- | -- |
| 3017 | Branford USA | 5.5 | 5.2 | 8.8 | 7.7 | 8.2 | -- | -- | -- | -- |
| 3018 | Haines City USA | 5.5 | 4.9 | -- | -- | -- | -- | -- | -- | -- |
| 3019 | Stuart USA | 5.5 | 6.3 | 7.5 | 8.4 | 8.7 | 8.3 | 7.9 | 7.8 | 8 |
