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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 102 |  Gardena USA | 12.1 | 11.8 | 10.6 | 11.6 | 14.3 | 15.3 | 12.2 | -- | -- |
| 103 | Visalia USA | 12.1 | 12.5 | 12.4 | 16.2 | 20.9 | 23.5 | 12.8 | 17.6 | 16.8 |
| 104 | Columbia USA | 12.1 | 10.6 | 14.9 | 18.8 | -- | -- | -- | -- | -- |
| 105 | Socorro USA | 12.1 | 9.4 | 8.1 | 7.6 | 9.1 | 8.3 | 6.9 | 7 | 8.3 |
| 106 |  Santa Catarina Pinula Guatemala | 12 | 20 | 18.5 | 9.5 | -- | -- | -- | -- | -- |
| 107 | West Rancho Dominguez USA | 12 | 11.9 | -- | -- | -- | -- | -- | -- | -- |
| 108 | Compton USA | 11.9 | 11.9 | 12.3 | 14.2 | 15.4 | 18 | 15.7 | -- | -- |
| 109 | Hanford USA | 11.9 | 12.2 | 13 | 14.8 | 15.4 | 20.4 | -- | -- | -- |
| 110 | Pasadena USA | 11.9 | 11 | 11.5 | 11.4 | 13.9 | 16.2 | 13.5 | -- | -- |
| 111 | Kentwood USA | 11.8 | 9.3 | -- | -- | -- | -- | -- | -- | -- |
| 112 |  Salmo Canada | 11.7 | 18.5 | -- | -- | -- | -- | -- | -- | -- |
| 113 | Inglewood USA | 11.7 | 9.2 | 7.7 | 12.2 | 15 | -- | -- | -- | -- |
| 114 | Portola USA | 11.7 | 12.5 | 7.1 | 7.6 | 22.1 | 21.3 | 16.9 | 20.4 | 19.1 |
| 115 | Douglas USA | 11.7 | -- | -- | -- | -- | -- | -- | -- | -- |
| 116 |  Santa Rosa Costa Rica | 11.6 | 6.2 | -- | -- | -- | -- | -- | -- | -- |
| 118 | San Marino USA | 11.6 | 13.3 | 11.7 | 12 | 12.5 | 16 | 14.5 | -- | -- |
| 119 | Syracuse USA | 11.6 | 9.9 | 8.2 | 10.7 | 13.9 | 11.2 | 8.5 | -- | -- |
| 120 | Alhambra USA | 11.5 | 11.6 | 11.6 | 11.8 | 14.8 | 15.9 | 14.4 | -- | -- |
| 121 | Newnan USA | 11.5 | 11.1 | 15.9 | -- | -- | -- | -- | -- | -- |
| 122 | Fridley USA | 11.5 | -- | -- | -- | -- | -- | -- | -- | -- |
| 123 | Glendora USA | 11.4 | 12.3 | 8.1 | 12.7 | 15 | 14.8 | 11.8 | 12.9 | 11.5 |
| 124 | Jurupa Valley USA | 11.4 | 11.4 | -- | -- | -- | -- | -- | -- | -- |
| 125 | El Paso USA | 11.4 | 7.8 | 7.5 | 5.6 | 7.6 | 9.3 | 8.8 | 11 | 9.6 |
| 126 | Prince Albert Canada | 11.3 | 9 | 14.9 | 5.9 | 10.9 | 7.4 | -- | -- | -- |
| 127 |  Comayagua Honduras | 11.3 | 9.9 | -- | -- | -- | -- | -- | -- | -- |
| 128 | Beverly Hills USA | 11.3 | 10 | 10.5 | 8.6 | 14.7 | -- | -- | -- | -- |
| 129 | South Gate USA | 11.3 | 9.9 | 10.1 | 10.9 | 15.2 | 18.1 | 15.2 | -- | -- |
| 130 | Macon USA | 11.3 | 9.2 | 10.2 | 8.2 | -- | -- | -- | -- | -- |
| 131 | New Meadows USA | 11.3 | 18 | -- | -- | -- | -- | -- | -- | -- |
| 132 | Ingalls Park USA | 11.3 | 11.2 | -- | -- | -- | -- | -- | -- | -- |
| 133 | Interior USA | 11.3 | 7.9 | 7.6 | 4.2 | 6.5 | 6.7 | -- | -- | -- |
| 134 | Maple Ridge Canada | 11.2 | 12 | 24.4 | 9.9 | 10.3 | -- | -- | -- | -- |
| 135 | Happy Camp USA | 11.2 | 8.1 | 16.8 | 9.6 | 18.8 | 28 | 13 | -- | -- |
| 136 | Imperial Beach USA | 11.2 | 13.5 | 8.2 | 10.7 | 13.4 | -- | -- | -- | -- |
| 137 | Monrovia USA | 11.2 | 11.8 | 11.6 | 11.7 | 14.7 | -- | -- | -- | -- |
| 139 | San Fernando USA | 11.2 | 10.3 | 10.5 | 9.7 | 13.5 | -- | -- | -- | -- |
| 140 | Lockport USA | 11.2 | 8.4 | -- | -- | -- | -- | -- | -- | -- |
| 141 | Santa Teresa USA | 11.2 | 7.3 | 5.6 | 1.8 | 7.3 | -- | -- | -- | -- |
| 142 | Bellevue USA | 11.2 | -- | -- | -- | -- | -- | -- | -- | -- |
| 143 | Fort Atkinson USA | 11.2 | 11.9 | -- | -- | -- | -- | -- | -- | -- |
| 144 | High Level Canada | 11.1 | 15.5 | -- | -- | -- | -- | -- | -- | -- |
| 145 |  Pachuca Mexico | 11.1 | 12.7 | 13.9 | -- | -- | -- | -- | -- | -- |
| 146 | Tuolumne City USA | 11.1 | 8.1 | 11.7 | -- | -- | -- | -- | -- | -- |
| 147 | Kamiah USA | 11.1 | 10 | 7.6 | 11.9 | 13.2 | 9 | 7.5 | 8.5 | 10.9 |
| 148 | Orofino USA | 11.1 | 10.2 | 12.7 | 9.1 | 20.1 | -- | -- | -- | -- |
| 149 | Lititz USA | 11.1 | 12.6 | -- | -- | -- | -- | -- | -- | -- |
| 150 | Baldwin Park USA | 11 | 12.4 | 15.3 | 17.8 | 18.8 | -- | -- | -- | -- |
| 151 | Carson USA | 11 | 11.2 | 10.1 | 11.6 | 13.4 | 15.9 | -- | -- | -- |
| 152 | San Bernardino USA | 11 | 12.9 | 14 | 13 | 14.1 | -- | -- | -- | -- |
| 153 | Anthony USA | 11 | 8.4 | 6.6 | 7.8 | 8.5 | 8.3 | -- | -- | -- |
