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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 204 |  Five Forks USA | 10.5 | 16.7 | -- | -- | -- | -- | -- | -- | -- |
| 205 |  Fort Erie Canada | 10.4 | 8.4 | -- | -- | -- | -- | -- | -- | -- |
| 206 | Delano USA | 10.4 | 10.6 | 14.5 | 15.4 | 14.8 | -- | -- | -- | -- |
| 207 | View Park-Windsor Hills USA | 10.4 | 10.6 | 9.4 | 10.3 | 14.7 | -- | -- | -- | -- |
| 208 | Whiting USA | 10.4 | 9.1 | 11.5 | -- | -- | -- | -- | -- | -- |
| 209 | Wolcott USA | 10.4 | 8.3 | -- | -- | -- | -- | -- | -- | -- |
| 210 | Fairview Park USA | 10.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 211 | Urbancrest USA | 10.4 | 9.4 | 10.6 | -- | -- | -- | -- | -- | -- |
| 212 | West Milton USA | 10.4 | 9.4 | 10.7 | -- | -- | -- | -- | -- | -- |
| 213 | Weslaco USA | 10.4 | 10.9 | 8.3 | -- | -- | -- | -- | -- | -- |
| 214 | East Wenatchee USA | 10.4 | 5.7 | 9.8 | 17.3 | -- | -- | -- | -- | -- |
| 215 | Harrison USA | 10.4 | 11.1 | -- | -- | -- | -- | -- | -- | -- |
| 216 | Winnipeg Canada | 10.3 | 7 | 9.9 | 5 | 9.6 | 5.7 | 5.5 | 7 | -- |
| 217 |  Ajijic Mexico | 10.3 | 10 | 10.6 | 13.7 | 12.8 | -- | -- | -- | -- |
| 218 | Maricopa USA | 10.3 | 7.6 | 4.4 | 4.4 | 5.1 | 6.6 | -- | -- | -- |
| 219 | Hacienda Heights USA | 10.3 | 11 | 11.7 | 10.2 | 14.7 | 15.3 | 13 | -- | -- |
| 220 | Irving USA | 10.3 | -- | -- | -- | -- | -- | -- | -- | -- |
| 221 | Lexington USA | 10.3 | 8.2 | 9.4 | 8.9 | 9 | 8.1 | 9 | 9.5 | -- |
| 222 | Bedford USA | 10.3 | 13.7 | -- | -- | -- | -- | -- | -- | -- |
| 223 | Laredo USA | 10.3 | 10.7 | 9.2 | 9.8 | 10.1 | -- | 10.8 | 9.7 | 9.4 |
| 224 | Entiat USA | 10.3 | 6.2 | 2.5 | -- | -- | -- | -- | -- | -- |
| 225 | Wenatchee USA | 10.3 | 5.9 | 8.8 | 14.4 | 7 | 12.5 | 8 | 10.8 | 11.8 |
| 226 | Black River Falls USA | 10.3 | -- | -- | -- | -- | -- | -- | -- | -- |
| 227 | Hinton Canada | 10.2 | 9.9 | 13.9 | 7.8 | 10.1 | 6.6 | 8 | -- | -- |
| 228 | Slave Lake Canada | 10.2 | 15.6 | -- | -- | -- | -- | -- | -- | -- |
| 229 | Mont-Royal Canada | 10.2 | 10 | 10.5 | 9.2 | 11.7 | 10.5 | 13 | -- | -- |
| 230 | Melville Canada | 10.2 | 10.1 | -- | -- | -- | -- | -- | -- | -- |
| 231 |  San Pedro Sula Honduras | 10.2 | 16.1 | 20.2 | -- | -- | -- | -- | -- | -- |
| 232 | Monterey Park USA | 10.2 | 10.9 | 10.3 | 10.6 | 14.5 | 16.3 | 14.5 | -- | -- |
| 233 | Porterville USA | 10.2 | 10.4 | 10 | 11.6 | 18.3 | 17.6 | 11 | 16.8 | 15.3 |
| 234 | West Hollywood USA | 10.2 | 9.9 | 9.6 | 9.8 | 15.4 | 16.5 | 14.3 | -- | -- |
| 235 | Jackson USA | 10.2 | 8.1 | 11.1 | -- | -- | -- | -- | -- | -- |
| 236 | East Bethel USA | 10.2 | 7.9 | -- | -- | -- | -- | -- | -- | -- |
| 237 | Cherryville USA | 10.2 | 9.7 | -- | -- | -- | -- | -- | -- | -- |
| 238 | Liberty USA | 10.2 | -- | -- | -- | -- | -- | -- | -- | -- |
| 239 | Fort Saskatchewan Canada | 10.1 | 12.2 | 16.8 | 7.4 | 8.2 | 5.8 | 7.5 | 11.6 | 7.9 |
| 240 | Saskatoon Canada | 10.1 | 9.1 | 15.5 | 7.8 | 10.4 | -- | 8.2 | -- | -- |
| 241 | Santiago de Queretaro Mexico | 10.1 | 10.6 | 13 | 12.9 | 6.7 | 6.3 | 9.2 | -- | -- |
| 242 | Diamond Bar USA | 10.1 | 10.2 | 13.3 | 12.5 | 16.1 | 17.5 | 16 | -- | -- |
| 243 | Oasis USA | 10.1 | 8.7 | 9.3 | 4.3 | 8.9 | -- | -- | -- | -- |
| 244 | Waterloo USA | 10.1 | 8.1 | 12.4 | 8.9 | 11.2 | 7.6 | 8.4 | 10.6 | 10.5 |
| 245 | Manchester USA | 10.1 | 8.6 | 11.7 | -- | -- | -- | -- | -- | -- |
| 246 | Libby USA | 10.1 | 10.5 | 11.6 | 11.8 | 15.1 | 14.7 | 12.2 | 14.9 | 15.1 |
| 247 | Bowling Green USA | 10.1 | 12.6 | -- | -- | -- | -- | -- | -- | -- |
| 248 | Lakewood USA | 10.1 | 9.2 | 16.7 | -- | -- | -- | -- | -- | -- |
| 249 | Newburgh Heights USA | 10.1 | 9 | 10.6 | -- | -- | -- | -- | -- | -- |
| 250 | Oregon USA | 10.1 | 9.5 | -- | -- | -- | -- | -- | -- | -- |
| 251 | Edinburg USA | 10.1 | 12.4 | 9.6 | 8.1 | -- | -- | -- | -- | -- |
| 253 | Medford USA | 10.1 | -- | -- | -- | -- | -- | -- | -- | -- |
| 254 | Erin Canada | 10 | 6.6 | 11.5 | -- | -- | -- | -- | -- | -- |
