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
| Rank | City | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|
| 8463 |  Kalama USA | 4.7 | 4.3 | 7.1 | -- | -- | -- | -- | -- | -- |
| 8464 | Lake Stevens USA | 4.7 | 4.6 | 6.4 | 9.6 | 5.2 | 8.8 | 5.7 | -- | -- |
| 8465 | Longview USA | 4.7 | 4.4 | 5.6 | 6.6 | 4.1 | -- | 5.6 | 6.8 | 8.4 |
| 8466 | Lynnwood USA | 4.7 | 4.2 | 6.5 | 2.7 | 7.4 | 9.6 | 8.7 | 7.1 | 6.7 |
| 8467 | Mattawa USA | 4.7 | 3.3 | 6.1 | -- | -- | -- | -- | -- | -- |
| 8468 | Meadowdale USA | 4.7 | 4.3 | 5.9 | -- | -- | -- | -- | -- | -- |
| 8469 | Newcastle USA | 4.7 | 3.6 | 3.9 | -- | -- | -- | -- | -- | -- |
| 8470 | Shoreline USA | 4.7 | 4.4 | 6.3 | 9.6 | 6.9 | -- | -- | -- | -- |
| 8471 | Sultan USA | 4.7 | 3.8 | 6 | 14.7 | 6.7 | -- | -- | -- | -- |
| 8472 | White Center USA | 4.7 | 4.8 | 6.9 | 10.2 | 6.9 | -- | -- | -- | -- |
| 8473 | Pinedale USA | 4.7 | 4.2 | 3.4 | 3.4 | 6.1 | 3.9 | 3.5 | -- | -- |
| 8474 |  Western Junction Australia | 4.6 | 2.7 | -- | -- | -- | -- | -- | -- | -- |
| 8475 | Brown Hill Australia | 4.6 | 4.8 | 4.8 | -- | -- | -- | -- | -- | -- |
| 8476 | Romsey Australia | 4.6 | 3.8 | -- | -- | -- | -- | -- | -- | -- |
| 8477 |  Axams Austria | 4.6 | 4 | 8.1 | 8.6 | 9 | 8 | 8.3 | -- | -- |
| 8478 | Ebensee Austria | 4.6 | 5.1 | 6.1 | 5.1 | 4.9 | 5.4 | 7.4 | 6.2 | 4.3 |
| 8479 |  Brasilia Brazil | 4.6 | 5.2 | 6.8 | 10 | -- | -- | -- | -- | -- |
| 8480 |  Cobble Hill Canada | 4.6 | 4.3 | 6.3 | 8.1 | 6.6 | 8.2 | 9.2 | -- | -- |
| 8481 | Lake Cowichan Canada | 4.6 | 4.5 | 7.6 | 8.8 | 10.9 | -- | 8.2 | -- | -- |
| 8482 | Pitt Meadows Canada | 4.6 | 4.2 | 4.3 | 4.7 | 4.5 | -- | 5.5 | -- | -- |
| 8483 | Surrey Canada | 4.6 | 4.3 | 5.4 | 6.5 | 4.9 | 6.6 | 5.8 | -- | -- |
| 8484 | Vancouver Canada | 4.6 | 4.2 | 5.5 | 6.7 | 5.8 | 8.1 | 6.1 | 6.3 | 6.6 |
| 8485 | Bathurst Canada | 4.6 | 4.2 | 5.6 | 5.1 | 5.5 | 5.1 | 5.2 | 5.7 | 6 |
| 8486 | Burin Canada | 4.6 | 4.2 | 4.6 | 5.8 | 4.9 | 4.6 | 3.8 | -- | -- |
| 8487 | Mount Pearl Canada | 4.6 | 5.3 | 6.4 | 4.6 | 4.9 | 5.2 | 4.5 | 5.4 | 5 |
| 8488 | Saint-Raymond Canada | 4.6 | 6.6 | -- | -- | -- | -- | -- | -- | -- |
| 8489 |  Kouvola Finland | 4.6 | 4.8 | 3.2 | 4.5 | 4.9 | 4.6 | 4.7 | -- | -- |
| 8490 | Harjavalta Finland | 4.6 | 4.5 | 4.3 | 4.4 | 5.2 | 5.7 | -- | -- | -- |
| 8491 |  Schirmeck France | 4.6 | 4.3 | 5 | 5.7 | 5 | -- | -- | -- | -- |
| 8492 |  Gersfeld Germany | 4.6 | 4.9 | 4.9 | -- | -- | -- | -- | -- | -- |
| 8493 |  Livigno Italy | 4.6 | 4.5 | 4.8 | -- | -- | -- | -- | -- | -- |
| 8494 |  Sa Pobla Spain | 4.6 | 4.1 | 7.1 | 9.4 | 8.1 | -- | -- | -- | -- |
| 8495 | Algar de Palancia Spain | 4.6 | 6.1 | 5.3 | 3.7 | 4.2 | 5.2 | 6 | 6.2 | 5.2 |
| 8496 | Villar del Arzobispo Spain | 4.6 | 4.4 | 5 | 5 | 7.1 | 9.4 | 9.2 | 8.2 | 8.1 |
| 8497 |  Jönköping Sweden | 4.6 | 2.3 | -- | -- | -- | -- | -- | -- | -- |
| 8498 | Uppsala Sweden | 4.6 | 4.5 | 3.9 | 4.6 | 5 | 4.4 | 5.5 | 6.7 | 4.6 |
| 8499 |  Newquay United Kingdom | 4.6 | 3.8 | 5.5 | 6.9 | 6.3 | 8.5 | 8.8 | -- | -- |
| 8500 | Patagonia USA | 4.6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 8501 | Superior USA | 4.6 | 5.2 | -- | -- | -- | -- | -- | -- | -- |
| 8502 | Alamo USA | 4.6 | 4.5 | 5.7 | 6.9 | 8.6 | 12.4 | 6.8 | -- | -- |
| 8503 | Castle Hill USA | 4.6 | 4.4 | -- | -- | -- | -- | -- | -- | -- |
| 8505 | Goleta USA | 4.6 | 4.6 | 5.8 | 6.2 | 8.4 | 9.2 | 6.9 | 7.9 | 9.5 |
| 8506 | Lafayette USA | 4.6 | 4.3 | 5.7 | 6.7 | 8 | 11.6 | 6.4 | -- | -- |
| 8507 | Los Olivos USA | 4.6 | 5 | 5.3 | 4.7 | 7.7 | -- | -- | -- | -- |
| 8508 | Morro Bay USA | 4.6 | 4.6 | 8.7 | 7.9 | 6.4 | 8 | 5 | -- | -- |
| 8509 | Nevada USA | 4.6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 8510 | Palo Alto USA | 4.6 | 4.4 | 5.6 | 7.4 | 7.7 | 10 | 6.5 | -- | -- |
| 8511 | Petaluma USA | 4.6 | 4.3 | 5.7 | 7.2 | 8.1 | 10.2 | 6.7 | -- | -- |
| 8512 | Placer USA | 4.6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 8513 | San Francisco USA | 4.6 | 4.2 | 5.8 | 8.1 | 8.2 | 9.6 | 7.1 | 12.6 | 10 |
