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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1105 |  Taylors USA | 8 | 7.8 | 10.2 | -- | -- | -- | -- | -- | -- |
| 1106 | Chattanooga USA | 8 | 8.3 | 12.6 | 12 | 12.6 | 10.8 | 12.4 | 8.6 | 8.9 |
| 1107 | Alief USA | 8 | 11.8 | -- | -- | -- | -- | -- | -- | -- |
| 1108 | Baytown USA | 8 | 9 | 10.4 | 10.5 | 9.6 | -- | 9.2 | 9.4 | 10 |
| 1109 | Corsicana USA | 8 | 8.8 | 9.1 | 6.7 | 7.5 | 7.8 | 6.9 | 7.8 | 8.1 |
| 1110 | Kaufman USA | 8 | 7.7 | 7.9 | 7.4 | 7.5 | 8.1 | 8 | 7.5 | 8.1 |
| 1111 | Sherman USA | 8 | 8.3 | 8.9 | -- | -- | -- | -- | -- | -- |
| 1112 | Rutland USA | 8 | 6.8 | 7.8 | 7.2 | 7.9 | 7.6 | 7.6 | 7.6 | 7.1 |
| 1113 | Deer Park USA | 8 | 6.6 | 10.7 | 14.2 | 18.1 | -- | -- | -- | -- |
| 1114 | Washington USA | 8 | 6.9 | 10.8 | 10.4 | 12.2 | -- | -- | -- | -- |
| 1115 | Sturgeon Bay USA | 8 | 5.5 | 10.8 | 9.7 | -- | -- | -- | -- | -- |
| 1116 |  Beaumont Canada | 7.9 | 9.5 | 17.7 | 12.5 | -- | -- | -- | -- | -- |
| 1117 | Cochrane Canada | 7.9 | 8.4 | -- | -- | -- | -- | -- | -- | -- |
| 1118 | High River Canada | 7.9 | 9 | 12.2 | -- | -- | -- | -- | -- | -- |
| 1119 | Okotoks Canada | 7.9 | 8.4 | -- | -- | -- | -- | -- | -- | -- |
| 1120 | Pickardville Canada | 7.9 | 9.6 | -- | -- | -- | -- | -- | -- | -- |
| 1121 | Beausejour Canada | 7.9 | 7.1 | -- | -- | -- | -- | -- | -- | -- |
| 1122 | Newmarket Canada | 7.9 | 6.3 | 10.6 | 6.4 | 6.6 | 6.2 | 6.3 | 6.4 | 6.4 |
| 1123 |  Bahia de los Angeles Mexico | 7.9 | 4.7 | -- | -- | -- | -- | -- | -- | -- |
| 1124 | Chickasaw USA | 7.9 | 8 | 8.9 | 8.4 | 10.3 | -- | -- | -- | -- |
| 1125 | Owens Cross Roads USA | 7.9 | 8.1 | 12.7 | 11.9 | -- | -- | -- | -- | -- |
| 1126 | Jacksonville USA | 7.9 | 8 | 11.7 | 12.2 | 13 | -- | -- | -- | -- |
| 1127 | Clovis USA | 7.9 | 8.5 | 9.8 | 11.9 | 16.9 | 22.8 | 10.1 | -- | -- |
| 1128 | El Rio USA | 7.9 | 7.5 | -- | -- | -- | -- | -- | -- | -- |
| 1129 | Los Banos USA | 7.9 | 5.7 | 3.6 | 3.4 | 11.8 | 16.4 | 6.3 | -- | -- |
| 1130 | Modesto USA | 7.9 | 8.5 | 10.2 | 12.5 | 14.6 | 16.5 | 8.1 | 15.1 | 13 |
| 1131 | Seacliff USA | 7.9 | 4.3 | -- | -- | -- | -- | -- | -- | -- |
| 1132 | Weaverville USA | 7.9 | 7 | 9.7 | 15.8 | 34.7 | 13.9 | 8.8 | -- | -- |
| 1133 | Silverton USA | 7.9 | 7.5 | 8.2 | 4.9 | 10.6 | 16.7 | 12.4 | -- | -- |
| 1134 | Quinnipiac University USA | 7.9 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1135 | Waynesboro USA | 7.9 | 8.3 | 16 | -- | -- | -- | -- | -- | -- |
| 1136 | Palatine USA | 7.9 | 7.1 | 12.7 | -- | -- | -- | -- | -- | -- |
| 1137 | Tell City USA | 7.9 | 6.6 | 9.7 | 9.5 | 9.4 | -- | -- | -- | -- |
| 1138 | Davenport USA | 7.9 | 7.2 | 13 | 10.5 | 12.1 | 10.8 | 9.5 | 10.4 | 10.4 |
| 1139 | Muscatine USA | 7.9 | 6.5 | 12.4 | 9 | 8.4 | 7.6 | 7.9 | 10 | 9.7 |
| 1140 | Sioux City USA | 7.9 | 7.2 | 12.8 | 8.5 | 9 | -- | -- | -- | -- |
| 1141 | Harrodsburg USA | 7.9 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1142 | Kenner USA | 7.9 | 7.9 | 9.5 | 9.1 | 8.5 | 7.7 | 8.6 | 9.6 | 7.9 |
| 1143 | Monroe USA | 7.9 | 7.5 | 12 | 12.6 | 13.2 | -- | -- | -- | -- |
| 1144 | Forest Heights USA | 7.9 | 8 | 9.9 | -- | -- | -- | -- | -- | -- |
| 1145 | Silver Spring USA | 7.9 | 7.4 | 10.7 | 11.5 | 12.4 | -- | -- | -- | -- |
| 1146 | Bloomfield Hills USA | 7.9 | 7 | 12.1 | 10.6 | -- | -- | -- | -- | -- |
| 1147 | Hancock USA | 7.9 | 6.2 | -- | -- | -- | -- | -- | -- | -- |
| 1148 | Hudsonville USA | 7.9 | 6.8 | 11 | 9 | 9.9 | -- | -- | -- | -- |
| 1149 | Kalkaska USA | 7.9 | 6.1 | 10.3 | -- | -- | -- | -- | -- | -- |
| 1150 | Park Rapids USA | 7.9 | 6.3 | 11 | 6.6 | 14.8 | -- | -- | -- | -- |
| 1151 | Seeley Lake USA | 7.9 | 8.2 | 10 | 12 | 15.5 | 14.2 | 11.8 | 12 | 27 |
| 1152 | Ainsworth USA | 7.9 | 8 | -- | -- | -- | -- | -- | -- | -- |
| 1153 | Gloucester USA | 7.9 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1154 | Rumson USA | 7.9 | 10.3 | -- | -- | -- | -- | -- | -- | -- |
