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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3172 |  Westminster USA | 5.3 | 5.6 | 11.6 | 0.3 | 12.8 | -- | -- | -- | -- |
| 3173 | Athol USA | 5.3 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3174 | Nantucket USA | 5.3 | 3.5 | 6.6 | 5.6 | 7 | -- | -- | -- | -- |
| 3175 | Natick USA | 5.3 | 5.1 | 7.7 | 5.8 | 9 | 7.5 | 8.5 | -- | -- |
| 3176 | Rowe USA | 5.3 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3177 | Weston USA | 5.3 | 5 | 8.6 | -- | -- | -- | -- | -- | -- |
| 3178 | Westport USA | 5.3 | 4.6 | -- | -- | -- | -- | -- | -- | -- |
| 3179 | Dearborn Heights USA | 5.3 | 6.8 | 13.2 | 10.5 | 11.8 | 11.2 | 11 | -- | -- |
| 3180 | L'Anse USA | 5.3 | 3.3 | 7.8 | 4.2 | -- | -- | -- | -- | -- |
| 3181 | Billings USA | 5.3 | 6.1 | 6.9 | 6.5 | 10.4 | 7.1 | 6.5 | 8.7 | 8.7 |
| 3182 | Beatty USA | 5.3 | 5.2 | 2.8 | 1.1 | 7.6 | -- | -- | -- | -- |
| 3183 | Silver Springs USA | 5.3 | 5.4 | 8.4 | 3.8 | -- | -- | -- | -- | -- |
| 3184 | Sparks USA | 5.3 | 5.4 | 5.5 | 7.4 | 13.5 | 10.7 | 5.6 | 7.7 | 8.4 |
| 3185 | Meredith USA | 5.3 | 4.9 | 6.2 | 4.9 | 8 | -- | -- | -- | -- |
| 3186 | Dover Plains USA | 5.3 | 5.3 | 7.9 | 7.1 | 8.7 | -- | -- | -- | -- |
| 3187 | Keeseville USA | 5.3 | 4.8 | 7.3 | 5.2 | 7.6 | -- | -- | -- | -- |
| 3188 | La Grange USA | 5.3 | 5.1 | 10.7 | 7 | -- | -- | -- | -- | -- |
| 3189 | Creswell USA | 5.3 | 5.3 | 6.8 | 9.4 | 7.8 | 7.8 | 9.5 | -- | -- |
| 3190 | Culver USA | 5.3 | 7 | 14 | 1.6 | 5.3 | -- | -- | -- | -- |
| 3191 | Hillsboro USA | 5.3 | 4.6 | 6.5 | 9.7 | 7.1 | 9.7 | 6.6 | 8.1 | 7.8 |
| 3192 | Newberg USA | 5.3 | 4.8 | 6.9 | 9.1 | 7.2 | -- | -- | -- | -- |
| 3193 | Tigard USA | 5.3 | 4.8 | 6.6 | 9.7 | 7.4 | -- | -- | -- | -- |
| 3194 | Hawley USA | 5.3 | 5.4 | -- | -- | -- | -- | -- | -- | -- |
| 3195 | Alvin USA | 5.3 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3196 | Leander USA | 5.3 | 5.8 | 8.1 | 8.6 | 10.3 | 9.1 | 10.2 | -- | -- |
| 3197 | Southside Place USA | 5.3 | 11.7 | -- | -- | -- | -- | -- | -- | -- |
| 3198 | Alpine USA | 5.3 | 5.4 | 5 | 6 | 8.8 | 7.3 | 5.5 | -- | -- |
| 3199 | Erda USA | 5.3 | 6.3 | 5.3 | 6.1 | 9.8 | 7.6 | 6.2 | 7.6 | 6.9 |
| 3200 | Heber USA | 5.3 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3201 | Layton USA | 5.3 | 6.3 | 5.8 | 6.6 | 9.7 | 7.4 | 5.8 | -- | -- |
| 3202 | North Salt Lake USA | 5.3 | 6.4 | 5.9 | 4.1 | 10 | 7.9 | 6.1 | -- | -- |
| 3203 | Virgin USA | 5.3 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3204 | West Jordan USA | 5.3 | 3.9 | 6.1 | 5.9 | 9.6 | 8.4 | 6.6 | -- | -- |
| 3205 | Woodland Hills USA | 5.3 | 4.3 | 3.6 | 3.5 | 9 | -- | -- | -- | -- |
| 3206 | Bonney Lake USA | 5.3 | 4.6 | 6.9 | 10.9 | 7.5 | -- | -- | -- | -- |
| 3207 | Brush Prairie USA | 5.3 | 5 | 7.4 | 10.4 | 9.1 | -- | -- | -- | -- |
| 3208 | Gleed USA | 5.3 | 5.9 | 12 | 11.7 | 12.5 | -- | -- | -- | -- |
| 3209 | Kelso USA | 5.3 | 4.8 | -- | -- | -- | -- | -- | -- | -- |
| 3210 | Tumwater USA | 5.3 | 4.1 | 6 | 10.4 | 7 | -- | -- | -- | -- |
| 3211 |  Banff Canada | 5.2 | 5.3 | 9.2 | 6 | 6.5 | -- | -- | -- | -- |
| 3212 | Creston Canada | 5.2 | 5.4 | 8.6 | 13.7 | 9.8 | -- | -- | -- | -- |
| 3213 | Langley Canada | 5.2 | 4.7 | 5.8 | -- | -- | -- | -- | -- | -- |
| 3214 | Mission Canada | 5.2 | 4.7 | 5.6 | 7.3 | 6 | 7.3 | 6.4 | -- | -- |
| 3215 | Okanagan Canada | 5.2 | 5.3 | 11.6 | 9.7 | 23.6 | -- | -- | -- | -- |
| 3216 | Parksville Canada | 5.2 | 4.3 | 6.1 | 7.8 | 6.8 | 9 | 9 | -- | -- |
| 3217 | Port Moody Canada | 5.2 | 4.5 | 3.7 | -- | -- | -- | -- | -- | -- |
| 3218 | Walnut Grove Canada | 5.2 | 7.3 | -- | -- | -- | -- | -- | -- | -- |
| 3219 |  Lamani Honduras | 5.2 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3220 |  Guerrero Negro Mexico | 5.2 | 4.1 | -- | -- | -- | -- | -- | -- | -- |
| 3221 | Buckeye USA | 5.2 | 4.1 | 7.3 | 10.2 | 8.3 | 12.9 | -- | -- | -- |
