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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1605 |  Komaki Japan | 9.9 | 8.8 | 9.8 | 9.3 | 8.2 | -- | -- | -- | -- |
| 1606 | Kamagaya Japan | 9.9 | 9 | 9.4 | 9.2 | 9.6 | 10.6 | 11.7 | 12.6 | 12.5 |
| 1607 | Nanatsugidai Japan | 9.9 | 8.8 | 9 | -- | -- | -- | -- | -- | -- |
| 1608 | Shiroi Japan | 9.9 | 8.9 | 9.9 | 9.3 | 9.5 | 9.5 | -- | -- | -- |
| 1609 | Chikugo Japan | 9.9 | 8.9 | -- | -- | -- | -- | -- | -- | -- |
| 1610 | Iizuka Japan | 9.9 | 9 | 10.8 | 11.9 | 10.9 | 11.8 | 12.6 | 13.5 | 13.3 |
| 1611 | Nogata Japan | 9.9 | 9.2 | 10.8 | 11.4 | 10.8 | 12.2 | 13.2 | 13.4 | 14.2 |
| 1612 | Ota Japan | 9.9 | 8.2 | 9.6 | 9 | 8.8 | 9.8 | 13 | 14.3 | 14.8 |
| 1613 | Toride Japan | 9.9 | 8.6 | 9.1 | 9 | 10.1 | -- | 11.8 | 12.4 | 11.8 |
| 1614 | Tarogawa Japan | 9.9 | 7.2 | -- | -- | -- | -- | -- | -- | -- |
| 1615 | Kameoka Japan | 9.9 | 7.9 | 8.8 | 8.6 | 9.2 | 10.1 | 12 | 11.9 | 12.3 |
| 1616 | Kizugawa Japan | 9.9 | 7.9 | 9.3 | 8.9 | 8.4 | 10.5 | 11.9 | 12.6 | 13 |
| 1617 | Kyoto Japan | 9.9 | 8.2 | 9.9 | 9.8 | 9.4 | 9.6 | 11 | 10.9 | 11.1 |
| 1618 | Tsu Japan | 9.9 | 8 | 9.1 | 8 | 8.4 | 8.1 | 8.8 | 9.8 | 12 |
| 1619 | Miemachi Ichiba Japan | 9.9 | 8 | -- | -- | -- | -- | -- | -- | -- |
| 1620 | Ekimae Japan | 9.9 | 8.2 | 9.4 | -- | -- | -- | -- | -- | -- |
| 1621 | Nishiki Japan | 9.9 | 8.8 | -- | -- | -- | -- | -- | -- | -- |
| 1622 | Hanno Japan | 9.9 | 10 | 10.9 | 10.2 | 10.1 | 10.8 | 11.9 | 13.2 | -- |
| 1623 | Hanyu Japan | 9.9 | 8.9 | 11.2 | 10.7 | 10.8 | 10.9 | 12.5 | 13.9 | -- |
| 1624 | Nagahama Japan | 9.9 | 8.2 | 9 | 8.6 | 8.4 | 8.7 | 10.8 | 11.2 | 11.2 |
| 1625 | Higashimurayama Japan | 9.9 | 8.5 | 8.9 | 8.5 | 8.7 | 10.6 | 12.1 | 13.5 | 13.3 |
| 1626 | Komae Japan | 9.9 | 8.9 | 8.9 | 8.6 | 8.4 | 9.1 | 10.9 | -- | -- |
| 1627 | Kunitachi Japan | 9.9 | 8.7 | 8.8 | 8.4 | 8.2 | 8.8 | 10.7 | 13.2 | 12.6 |
| 1628 | Mitaka Japan | 9.9 | 8.7 | 9.4 | 8.8 | 8.9 | 9.7 | 11.1 | 14 | 14.3 |
| 1629 |  Wando South Korea | 9.9 | 11 | 11 | -- | -- | -- | -- | -- | -- |
| 1630 |  Mueang Thailand | 9.9 | 21.7 | 14 | -- | -- | -- | -- | -- | -- |
| 1631 | Bang Krabao Thailand | 9.9 | 12.8 | 18.7 | 13 | -- | -- | -- | -- | -- |
| 1632 | Nagoya Japan | 9.8 | 8.5 | 9.5 | 9.3 | 9.2 | 9.4 | 11.7 | 12.1 | 12.2 |
| 1633 | Kashiwa Japan | 9.8 | 8.5 | 9.3 | 8.7 | 9.1 | 9.6 | 11.3 | 12.5 | 12.2 |
| 1634 | Noda Japan | 9.8 | 8.6 | 9.9 | 9.1 | 9.1 | 9.9 | 11.6 | 13.8 | 14.9 |
| 1635 | Sanno Japan | 9.8 | 8.5 | 8.5 | -- | -- | -- | -- | -- | -- |
| 1636 | Fukui Japan | 9.8 | 8 | 8.7 | 8.3 | 7.7 | 7.3 | 9.5 | -- | -- |
| 1637 | Kanda Japan | 9.8 | 8.7 | 10.7 | 11.5 | 10.5 | 13.3 | 13.5 | 14.3 | 14.9 |
| 1638 | Yamabe Japan | 9.8 | 9.2 | -- | -- | -- | -- | -- | -- | -- |
| 1639 | Kakamigahara Japan | 9.8 | 6.9 | 7.4 | 7.4 | 7.8 | 8.3 | 9.5 | 10.1 | 9.3 |
| 1640 | Tomioka Japan | 9.8 | 8.2 | 8.7 | 8.2 | 8.3 | 8.6 | 9.6 | 10.2 | 9 |
| 1641 | Kawanishi Japan | 9.8 | 7.8 | 8.6 | 8.3 | 8.1 | 8.5 | 8.7 | 10.2 | 13.6 |
| 1642 | Tsutogawacho Japan | 9.8 | 7.9 | 7.9 | -- | -- | -- | -- | -- | -- |
| 1643 | Isago Japan | 9.8 | 9.6 | -- | -- | -- | -- | -- | -- | -- |
| 1644 | Miyayama Japan | 9.8 | 9 | -- | -- | -- | -- | -- | -- | -- |
| 1645 | Kochi Japan | 9.8 | 9.3 | 10.4 | 10.5 | 10.5 | 11 | 11.2 | 11.2 | 12.8 |
| 1646 | Aso Japan | 9.8 | 7.6 | 9.1 | 9.8 | 8.8 | 10.5 | 11.5 | 10.6 | 11.6 |
| 1647 | Fukuchiyama Japan | 9.8 | 8.3 | 8.9 | 8 | 8.1 | 8.5 | 9.8 | 10.4 | 10.6 |
| 1648 | Minamiyamashiro Japan | 9.8 | 7.4 | 8.4 | 8.5 | 8.3 | 8.4 | 10 | 10.4 | 11.1 |
| 1649 | Nobeoka Japan | 9.8 | 9.4 | 9.9 | 10.2 | 9.3 | 10.7 | 9.8 | 11.5 | 14 |
| 1650 | Matsuura Japan | 9.8 | 9.8 | 10.3 | 9.7 | 10.5 | 11.8 | 11.8 | -- | -- |
| 1651 | Itoigawa Japan | 9.8 | 8.4 | 8.6 | 8.4 | 8 | 7.8 | 9 | -- | -- |
| 1652 | Kotobukicho Japan | 9.8 | 8.5 | 9.2 | -- | -- | -- | -- | -- | -- |
| 1653 | Sennaricho Japan | 9.8 | 8.3 | 9.3 | -- | -- | -- | -- | -- | -- |
| 1654 | Wanikoen Japan | 9.8 | 7.7 | 9.4 | -- | -- | -- | -- | -- | -- |
