2017-2025
World's most polluted cities | IQAir
The most polluted cities according to data aggregated from over 80,000 data points.
2025
World Air Quality Report
2025
World Air Quality Report
| Rank | City | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|
| 6486 |  Colville USA | 6.8 | 5.3 | 8.9 | 8.2 | 14 | 13.4 | 8.3 | 13.3 | 19.1 |
| 6487 | Walla Walla USA | 6.8 | 6.4 | 8.2 | 10.6 | 8.6 | 13.3 | 7.8 | 7.2 | 12.7 |
| 6488 | Beckley USA | 6.8 | 6.9 | -- | -- | -- | -- | -- | -- | -- |
| 6489 | La Crosse USA | 6.8 | 5.7 | 8.9 | 7.4 | 8 | 7.7 | 7.9 | 7.7 | 6.8 |
| 6490 | Maple Bluff USA | 6.8 | 6.2 | 13.3 | 19.1 | -- | -- | -- | -- | -- |
| 6491 | Sparta USA | 6.8 | 6.4 | 12.6 | 10.1 | 12.5 | -- | -- | -- | -- |
| 6492 |  Kembla Grange Australia | 6.7 | 6.9 | 6.1 | 4.8 | 13.4 | 9.3 | 9.9 | 7 | 6.9 |
| 6493 | Darwin Australia | 6.7 | 9.7 | 11.2 | 10.2 | 6.1 | 6.1 | -- | -- | -- |
| 6494 | Perth Australia | 6.7 | 6.8 | 5.7 | 7.6 | 6.6 | 8.4 | 6.4 | 9.3 | 9.7 |
| 6495 | Croydon Australia | 6.7 | 6.7 | 6.6 | -- | -- | -- | -- | -- | -- |
| 6496 | Dandenong Australia | 6.7 | 6.8 | 5.9 | -- | -- | -- | -- | -- | -- |
| 6497 |  Bad Ischl Austria | 6.7 | 6.3 | 6.3 | 7.4 | 7.8 | 7.8 | 8.5 | 10.4 | 8.7 |
| 6498 |  Medicilandia Brazil | 6.7 | 24.3 | -- | -- | -- | -- | -- | -- | -- |
| 6499 |  Lac des Arcs Canada | 6.7 | 5.8 | 9.6 | -- | -- | -- | -- | -- | -- |
| 6500 | Spruce Grove Canada | 6.7 | 8.1 | 16.8 | 7.3 | 9.6 | 7.2 | 9.8 | -- | -- |
| 6501 | Burns Lake Canada | 6.7 | 8.3 | 13.9 | 7.6 | 7.4 | 7.5 | 10.9 | -- | -- |
| 6502 | Eagle Bay Canada | 6.7 | 6.4 | 14.5 | -- | -- | -- | -- | -- | -- |
| 6503 | Harrison Hot Springs Canada | 6.7 | 1.2 | 1.6 | -- | -- | -- | -- | -- | -- |
| 6504 | Osoyoos Canada | 6.7 | 6.9 | -- | -- | -- | -- | -- | -- | -- |
| 6505 | Salmon Arm Canada | 6.7 | 6.2 | 17.7 | 9.5 | 37.4 | -- | -- | -- | -- |
| 6506 | Parry Sound Canada | 6.7 | 4.9 | 8.2 | 4.9 | 5.4 | 4.9 | 4.4 | 5.2 | 4.8 |
| 6507 | Tiverton Canada | 6.7 | 5.4 | 8.4 | 5.1 | 5.9 | 5.2 | 5.4 | 5.8 | 5.4 |
| 6508 | Granby Canada | 6.7 | 6.3 | 8.8 | -- | -- | -- | -- | -- | -- |
| 6509 |  Mariehamn Finland | 6.7 | -- | -- | -- | -- | -- | -- | -- | -- |
| 6510 |  Herbolzheim Germany | 6.7 | 5.2 | 8.4 | 10.4 | -- | -- | -- | -- | -- |
| 6511 | Aachen Germany | 6.7 | 7.6 | 8 | 10.1 | 9.2 | 8.8 | -- | -- | -- |
| 6512 | Landau in der Pfalz Germany | 6.7 | -- | -- | -- | -- | -- | -- | -- | -- |
| 6513 | Flensburg Germany | 6.7 | 6.6 | 7.3 | 9 | 9.8 | 9.1 | 10.9 | 12.2 | 10.4 |
| 6514 |  Bandon Ireland | 6.7 | 4.6 | 4.9 | 9.8 | 12.9 | -- | -- | -- | -- |
| 6515 |  Genoa Italy | 6.7 | -- | -- | -- | -- | -- | -- | -- | -- |
| 6516 |  Takizawa Japan | 6.7 | 6.4 | 7.1 | 6.7 | 7.8 | 11 | 13.3 | 13 | 12.3 |
| 6517 | Kurihara Japan | 6.7 | 6.1 | 7.2 | 6.3 | 6.8 | 7 | 8.3 | 8.4 | 8 |
| 6518 | Nago Japan | 6.7 | 8.2 | 9.8 | 8.6 | 7.5 | 8.2 | 8.9 | 9.6 | 8.8 |
| 6519 |  Shchuchinsk Kazakhstan | 6.7 | 7.5 | 3 | 2.6 | 72.5 | -- | -- | -- | -- |
| 6520 |  Swieqi Malta | 6.7 | -- | -- | -- | -- | -- | -- | -- | -- |
| 6521 |  Heerlen Netherlands | 6.7 | 7.2 | 6.7 | 9.5 | 9.4 | 8.3 | 9.7 | 10.6 | 9.1 |
| 6522 |  Chupaca Peru | 6.7 | 9.5 | 7.9 | 11.5 | 8.3 | 14.4 | 14.8 | -- | -- |
| 6523 |  Yekaterinburg Russia | 6.7 | -- | -- | -- | -- | -- | -- | -- | -- |
| 6524 |  Arteixo Spain | 6.7 | 7 | 8 | 7.5 | 8.6 | -- | -- | -- | -- |
| 6525 | Santiago de Compostela Spain | 6.7 | 6.5 | 6.4 | 8.2 | 8.7 | 9 | 8.7 | 10.3 | 12.7 |
| 6526 | Caravaca de la Cruz Spain | 6.7 | 17.8 | 10.4 | 9.6 | 8 | 9.4 | -- | -- | -- |
| 6527 |  Gothenburg Sweden | 6.7 | 6.4 | -- | -- | -- | -- | -- | -- | -- |
| 6528 |  Uman' Ukraine | 6.7 | 5.9 | 5.7 | 6.7 | -- | -- | -- | -- | -- |
| 6529 |  Flackwell Heath United Kingdom | 6.7 | 5.4 | 10.3 | -- | -- | -- | -- | -- | -- |
| 6530 | Sowerby Bridge United Kingdom | 6.7 | 5.6 | -- | -- | -- | -- | -- | -- | -- |
| 6531 | Hoover USA | 6.7 | 11 | 10.6 | 11.7 | 13.1 | -- | -- | -- | -- |
| 6532 | Benton USA | 6.7 | 4.8 | 3.6 | 2.6 | 12.5 | -- | 4.4 | -- | -- |
| 6533 | Campo USA | 6.7 | 6.4 | 6.7 | 5.5 | -- | -- | -- | -- | -- |
| 6534 | Caspar USA | 6.7 | 5.8 | 7.2 | 5.9 | -- | -- | -- | -- | -- |
| 6535 | Coarsegold USA | 6.7 | 6.3 | 7.3 | 8 | 13.4 | 24.5 | 6.6 | -- | -- |
