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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1457 |  Prinsburg USA | 7.5 | 7.3 | -- | -- | -- | -- | -- | -- | -- |
| 1458 | Belton USA | 7.5 | 5.9 | 5.9 | 6 | 7 | 6.3 | 6.5 | 6.6 | 7.2 |
| 1459 | Columbia USA | 7.5 | 11.5 | -- | -- | -- | -- | -- | -- | -- |
| 1460 | Clinton USA | 7.5 | 9.5 | 8.5 | -- | -- | -- | -- | -- | -- |
| 1461 | Hamilton USA | 7.5 | 10.6 | 7.7 | 11.2 | 11.6 | 7.8 | 6.3 | 6.9 | 15.5 |
| 1462 | Richland USA | 7.5 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1463 | Beatrice USA | 7.5 | 5.9 | 7.2 | 21.8 | 11.6 | -- | -- | -- | -- |
| 1464 | Dakota City USA | 7.5 | 7.8 | -- | -- | -- | -- | -- | -- | -- |
| 1465 | Kearney USA | 7.5 | 7.4 | -- | -- | -- | -- | -- | -- | -- |
| 1466 | Glen Ridge USA | 7.5 | 7.1 | 11.1 | -- | -- | -- | -- | -- | -- |
| 1467 | Hackettstown USA | 7.5 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1468 | Hampton USA | 7.5 | 6.5 | 9.8 | -- | -- | -- | -- | -- | -- |
| 1469 | Paterson USA | 7.5 | 6.7 | 8.4 | -- | -- | -- | -- | -- | -- |
| 1470 | Peekskill USA | 7.5 | 6.5 | 9.7 | -- | -- | -- | -- | -- | -- |
| 1471 | Winston-Salem USA | 7.5 | 7.7 | 11.2 | 10.3 | 10.5 | 9.1 | 12.3 | 7.2 | 7.7 |
| 1472 | Atoka USA | 7.5 | 8.1 | -- | -- | -- | -- | -- | -- | -- |
| 1473 | Red Rock USA | 7.5 | 6.8 | 10.5 | 9 | -- | -- | -- | -- | -- |
| 1474 | Cave Junction USA | 7.5 | 6.1 | 17.1 | 9.7 | 8.9 | 15.3 | 7.5 | 13.3 | 12 |
| 1475 | Grants Pass USA | 7.5 | 6.2 | 11.3 | 11.7 | 10.9 | 12.7 | 8.4 | 12.8 | 13.7 |
| 1476 | Klamath Falls USA | 7.5 | 8.3 | 9 | 7.7 | 21.6 | 16.5 | 9.1 | 18.9 | 13.2 |
| 1477 | Medford USA | 7.5 | 6.9 | 11.4 | 9.4 | 16.4 | 15.8 | 8.7 | 22 | 15 |
| 1478 | Ontario USA | 7.5 | 6.9 | 5.6 | 7.7 | 10.6 | -- | -- | -- | -- |
| 1479 | Phoenix USA | 7.5 | 7.5 | 13.7 | 11.6 | 19.1 | 14.8 | 9.7 | -- | -- |
| 1480 | Coopersburg USA | 7.5 | 6.9 | 11.7 | 10.4 | 12.3 | -- | -- | -- | -- |
| 1481 | Kittanning USA | 7.5 | 6.6 | 9.2 | 9.3 | 9.4 | 8.2 | 8 | -- | -- |
| 1482 | Monessen USA | 7.5 | 5.8 | 10.7 | 11.7 | -- | -- | -- | -- | -- |
| 1483 | Northumberland USA | 7.5 | 7.8 | 11.8 | -- | -- | -- | -- | -- | -- |
| 1484 | Portersville USA | 7.5 | 7 | 10.9 | 9 | -- | -- | -- | -- | -- |
| 1485 | Sewickley USA | 7.5 | 6.8 | 10.8 | 9.9 | 12.6 | -- | -- | -- | -- |
| 1486 | White Haven USA | 7.5 | 7.5 | -- | -- | -- | -- | -- | -- | -- |
| 1487 | Watertown USA | 7.5 | 8 | 9.6 | 7.8 | 8.9 | 10.7 | 7.2 | 7.8 | 7.8 |
| 1488 | Channelview USA | 7.5 | 8.3 | 11.5 | 12.2 | 13.2 | -- | -- | -- | -- |
| 1489 | Decatur USA | 7.5 | 8.4 | -- | -- | -- | -- | -- | -- | -- |
| 1490 | Denton USA | 7.5 | 6.8 | 8.5 | 7.3 | 11.2 | 8.5 | 7.4 | 8.1 | 8.3 |
| 1491 | Midlothian USA | 7.5 | 8 | 10.7 | 10.1 | 11 | 9.3 | 9.2 | 9.3 | 9.2 |
| 1492 | Rollingwood USA | 7.5 | 11.6 | -- | -- | -- | -- | -- | -- | -- |
| 1493 | Thompsons USA | 7.5 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1494 | West Lake Hills USA | 7.5 | 8.6 | -- | -- | -- | -- | -- | -- | -- |
| 1495 | Arlington USA | 7.5 | 7.5 | 11.7 | 10.5 | 12 | 9.9 | 12 | -- | -- |
| 1496 | Sterling USA | 7.5 | 6.4 | 11.6 | 11.1 | -- | -- | -- | -- | -- |
| 1497 | Grand Coulee USA | 7.5 | 7.5 | 10.5 | 7.9 | 14 | 11.9 | 6.9 | -- | -- |
| 1498 | Pine Grove USA | 7.5 | 7.3 | 10.6 | 8.3 | -- | -- | -- | -- | -- |
| 1499 | Union Gap USA | 7.5 | 8.6 | -- | -- | -- | -- | -- | -- | -- |
| 1500 | Wilbur USA | 7.5 | 3.1 | -- | -- | -- | -- | -- | -- | -- |
| 1501 | Yakima USA | 7.5 | 6.9 | 8.7 | 9.3 | 13.2 | 11.2 | 10.4 | 11.4 | 14.6 |
| 1502 | Dunbar USA | 7.5 | 8.4 | 9.4 | -- | -- | -- | -- | -- | -- |
| 1503 | Madison USA | 7.5 | 6.7 | 12.4 | 9.4 | 11.5 | 9.1 | 10.5 | 8.7 | 7.5 |
| 1504 | Onalaska USA | 7.5 | 6.8 | -- | -- | -- | -- | -- | -- | -- |
| 1505 |  Edmonton Canada | 7.4 | 8.7 | 16.6 | 8.7 | 9.5 | 6.5 | 7.4 | 10.5 | 8.2 |
| 1506 | Kasabonika Canada | 7.4 | 1.9 | -- | -- | -- | -- | -- | -- | -- |
