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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1155 |  Westfield USA | 7.9 | 7.2 | 9.3 | -- | -- | -- | -- | -- | -- |
| 1156 | Woodcliff Lake USA | 7.9 | 7.5 | -- | -- | -- | -- | -- | -- | -- |
| 1157 | New York USA | 7.9 | 7.5 | 11.6 | 9.9 | 10 | -- | -- | -- | -- |
| 1158 | Fayetteville USA | 7.9 | 7.9 | 11.1 | 8.9 | 8.4 | 7.1 | 7.7 | 7.3 | 9 |
| 1159 | Stanley USA | 7.9 | 6 | 9.8 | 8.2 | -- | -- | -- | -- | -- |
| 1160 | Logan USA | 7.9 | 7 | 12.7 | -- | -- | -- | -- | -- | -- |
| 1161 | Poteau USA | 7.9 | 8.2 | 11.1 | 10 | 11.9 | -- | -- | -- | -- |
| 1162 | Bethlehem USA | 7.9 | 7.4 | 13 | 11.4 | 13.8 | 12 | 13.8 | -- | -- |
| 1163 | Chest Springs USA | 7.9 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1164 | Cochranville USA | 7.9 | 7.8 | -- | -- | -- | -- | -- | -- | -- |
| 1165 | Downingtown USA | 7.9 | 7.5 | 12.9 | 11.9 | -- | -- | -- | -- | -- |
| 1166 | East Petersburg USA | 7.9 | 7.7 | 10.5 | -- | -- | -- | -- | -- | -- |
| 1167 | Jessup USA | 7.9 | 7.7 | 10.9 | -- | -- | -- | -- | -- | -- |
| 1168 | Langhorne USA | 7.9 | 7.3 | 10.3 | -- | -- | -- | -- | -- | -- |
| 1169 | Lehighton USA | 7.9 | 7.1 | 12.4 | 11.3 | 13.1 | -- | -- | -- | -- |
| 1170 | Lewisburg USA | 7.9 | 8.5 | 11.9 | -- | -- | -- | -- | -- | -- |
| 1171 | Morrisville USA | 7.9 | 7.3 | 10.7 | -- | -- | -- | -- | -- | -- |
| 1172 | Reading USA | 7.9 | 7.6 | 11.9 | 9.5 | 11 | 9.6 | 9.4 | 7.6 | -- |
| 1173 | Upland USA | 7.9 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1174 | Athens USA | 7.9 | 7.6 | 9.7 | 8.5 | 10.2 | 8.7 | 10 | 7.6 | 8.9 |
| 1175 | Abilene USA | 7.9 | 8.2 | 7.5 | 6.3 | -- | -- | -- | -- | -- |
| 1176 | Hutto USA | 7.9 | 8.5 | 7.9 | -- | -- | -- | -- | -- | -- |
| 1177 | Longview USA | 7.9 | 8.3 | 9.9 | 11.2 | 13.2 | 12.2 | 13.9 | -- | -- |
| 1178 | The Colony USA | 7.9 | 9.1 | 10.5 | 9 | -- | -- | -- | -- | -- |
| 1179 | Bull Run USA | 7.9 | 7.4 | 10.9 | -- | -- | -- | -- | -- | -- |
| 1180 | East Highland Park USA | 7.9 | 7.8 | 11.7 | -- | -- | -- | -- | -- | -- |
| 1181 | Bridgeport USA | 7.9 | 7.3 | 9.7 | 6.3 | -- | -- | -- | -- | -- |
| 1182 | Cathcart USA | 7.9 | 5.1 | 6.6 | -- | -- | -- | -- | -- | -- |
| 1183 | Leavenworth USA | 7.9 | 4.1 | 7.2 | 17.6 | 7.9 | -- | 7 | 9.3 | 8.4 |
| 1184 | Suncrest USA | 7.9 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1185 | West Richland USA | 7.9 | 7.2 | 11.4 | 12.3 | 12.1 | -- | -- | -- | -- |
| 1186 | Huntington USA | 7.9 | 7.5 | 10.7 | 12.7 | 11.7 | -- | -- | -- | -- |
| 1187 | Shepherdstown USA | 7.9 | 7.5 | 13.1 | 12.6 | 13.4 | -- | -- | -- | -- |
| 1188 |  Blaeberry Canada | 7.8 | 9 | -- | -- | -- | -- | -- | -- | -- |
| 1189 | Thessalon Canada | 7.8 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1190 | Thunder Bay Canada | 7.8 | 5.6 | 6.5 | 5.1 | 6.6 | 5.8 | 5.1 | 6.1 | 5.7 |
| 1191 | Becancour Canada | 7.8 | 6.7 | 7.8 | -- | -- | -- | -- | -- | -- |
| 1192 | Brossard Canada | 7.8 | 7 | 9.4 | 7.4 | 7.6 | -- | -- | -- | -- |
| 1193 | Huntsville USA | 7.8 | 7.5 | 9.8 | 9.4 | 11.1 | 9.4 | 9.6 | 9.4 | 9.4 |
| 1194 | Beaumont USA | 7.8 | 9.5 | 9.6 | 8.2 | 11.6 | -- | -- | -- | -- |
| 1195 | Chester USA | 7.8 | 11 | 6.9 | 9.9 | 30.2 | 13.9 | 15.1 | -- | -- |
| 1196 | June Lake USA | 7.8 | 5.5 | 4.3 | 3.4 | 12.2 | -- | -- | -- | -- |
| 1197 | Lakewood USA | 7.8 | 8.3 | 11.3 | 12.1 | 14.6 | 15.8 | -- | -- | -- |
| 1198 | Oak Hills USA | 7.8 | 8.6 | 7.2 | 5.9 | -- | -- | -- | -- | -- |
| 1199 | Riverbank USA | 7.8 | 9.1 | 11 | 13.7 | 15.3 | -- | -- | -- | -- |
| 1200 | Westmorland USA | 7.8 | 6.3 | 8.4 | 10.9 | 6.8 | 9.8 | -- | -- | -- |
| 1201 | Platteville USA | 7.8 | 8.5 | -- | -- | -- | -- | -- | -- | -- |
| 1202 | Atlanta USA | 7.8 | 8.3 | 11 | 12.1 | 13.3 | 10 | 11.9 | 10.6 | 11.3 |
| 1203 | Suwanee USA | 7.8 | 7.3 | 7.9 | -- | -- | -- | -- | -- | -- |
| 1204 | McLeansboro USA | 7.8 | 7.8 | 9.4 | 8.2 | 9.4 | 8.7 | 8.5 | 9.1 | -- |
