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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1705 |  Umedacho Japan | 9.6 | 8.2 | -- | -- | -- | -- | -- | -- | -- |
| 1706 | Kurayoshi Japan | 9.6 | 9.6 | 11.4 | 10.1 | 9.1 | 9.8 | 10.9 | -- | -- |
| 1707 | Nagai Japan | 9.6 | 8.7 | 11.6 | 7.4 | 8 | 7.9 | 8.2 | 8.8 | 8.5 |
| 1708 | Kudamatsu Japan | 9.6 | 8.7 | 9.9 | 10 | 10.7 | 11.4 | 12.6 | 12.9 | 14 |
| 1709 |  Inje South Korea | 9.6 | 10.4 | 11.7 | 11.3 | 11.6 | -- | -- | -- | -- |
| 1710 | Jindo South Korea | 9.6 | 9.5 | 11.2 | -- | -- | -- | -- | -- | -- |
| 1711 |  Trang Thailand | 9.6 | 12 | 12.5 | -- | -- | -- | -- | -- | -- |
| 1712 | Yachimata Japan | 9.5 | 8.2 | 8.9 | 8.8 | 8.7 | 9.2 | 10.5 | 9.6 | -- |
| 1713 | Yotsukaido Japan | 9.5 | 8.3 | 9.3 | 9.1 | 10 | 10.5 | 11.5 | 12.5 | 11.8 |
| 1714 | Imadate District Japan | 9.5 | 7.2 | -- | -- | -- | -- | -- | -- | -- |
| 1715 | Dazaifu Japan | 9.5 | 8.7 | 11.1 | 12 | 11.2 | 12 | 14.3 | 15.3 | 15.8 |
| 1716 | Ishioka Japan | 9.5 | 8.4 | 8.9 | 8.2 | 8.1 | -- | 10.2 | 10.2 | 10.2 |
| 1717 | Hayama Japan | 9.5 | 8.9 | 9.8 | 9 | -- | -- | -- | -- | -- |
| 1718 | Takamatsu Japan | 9.5 | 8.4 | -- | -- | -- | -- | -- | -- | -- |
| 1719 | Nichinan Japan | 9.5 | 8.9 | 10.8 | 10.6 | 10.2 | 12.3 | 12.2 | 12.4 | 13.3 |
| 1720 | Kunisaki Japan | 9.5 | 8.3 | 9 | 8.7 | 8.6 | 8.9 | 9.8 | 10.1 | 11.4 |
| 1721 | Usuki Japan | 9.5 | 8 | 8.7 | 8.9 | 8.3 | 9.7 | 10 | 10.5 | 12.1 |
| 1722 | Izumi Japan | 9.5 | 8 | 9.5 | 8.2 | 7.6 | -- | 13.7 | 14.4 | 13.5 |
| 1723 | Mikkaichicho Japan | 9.5 | 8 | 9 | -- | -- | -- | -- | -- | -- |
| 1724 | Osaka-sayama Japan | 9.5 | 7.6 | -- | -- | -- | -- | -- | -- | -- |
| 1725 | Sennan Japan | 9.5 | 7.7 | 8.6 | 8.3 | 7.7 | -- | 16.5 | 15.3 | 14.5 |
| 1726 | Saga Japan | 9.5 | 9.2 | 10.3 | 10 | 10.3 | 12.2 | 13.8 | 13.5 | 14.3 |
| 1727 | Takeo Japan | 9.5 | 8.8 | 10.5 | 10.5 | 10.2 | 13.4 | 13.6 | 13.1 | 14.2 |
| 1728 | Ureshino Japan | 9.5 | 8.9 | 10.7 | 10.3 | 10.6 | 11.7 | 13.6 | 13.8 | 14.9 |
| 1729 | Fukaya Japan | 9.5 | 8.7 | 9.7 | 8.7 | 9.8 | 10.8 | 11.9 | 13.5 | 12.7 |
| 1730 | Honjo Japan | 9.5 | 8.8 | 9.6 | 8.8 | 9 | 9.6 | 10.7 | 12.3 | 12.1 |
| 1731 | Saitama Japan | 9.5 | 8.7 | 9.4 | 9.2 | 9.1 | 9.8 | 11.3 | 12.7 | 12.7 |
| 1732 | Kamiyama Japan | 9.5 | 7.7 | 8.5 | 9 | 8.7 | 9.6 | 9.7 | 10.7 | 10.5 |
| 1733 | Mine Japan | 9.5 | 8.3 | 9.6 | 7.9 | 8.2 | 8.8 | 10.4 | 11.5 | 11.6 |
| 1734 |  Lhasa China | 9.4 | 9.6 | -- | -- | -- | -- | -- | -- | -- |
| 1735 |  Nusa Dua Indonesia | 9.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1736 | Toyohashi Japan | 9.4 | 7.5 | 8.7 | 8 | 8.8 | 8.9 | 10.4 | 10.7 | 10.4 |
| 1737 | Nagareyama Japan | 9.4 | 8.5 | 9.2 | 8.9 | 8.8 | 9.9 | 11.4 | 12.2 | 11.8 |
| 1738 | Tomisato Japan | 9.4 | 8.3 | 9 | 8.6 | 8 | -- | -- | -- | -- |
| 1739 | Yachiyo Japan | 9.4 | 8.5 | 9.4 | 8.8 | 9 | 9.7 | 10.8 | 12.1 | 11.4 |
| 1740 | Yokota Japan | 9.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1741 | Uwajima Japan | 9.4 | 7.2 | 8.4 | 8.1 | 8.3 | 9.6 | 9.4 | 9.9 | 10.4 |
| 1742 | Nakatsugawa Japan | 9.4 | 7.7 | 8.4 | 8 | 7.9 | -- | -- | -- | -- |
| 1743 | Toyooka Japan | 9.4 | 7.3 | 8.6 | 8.4 | 8.6 | 8.6 | 12.3 | 12 | 11.1 |
| 1744 | Nagasaki Japan | 9.4 | 9.3 | 10 | 9.4 | 10.1 | 11.2 | 11.8 | 12.3 | 13 |
| 1745 | Yufu Japan | 9.4 | 8.6 | 9.4 | 9.6 | 8.6 | 9.6 | 10.1 | 10.3 | 12 |
| 1746 | Midorigaoka Japan | 9.4 | 8 | 8.7 | -- | -- | -- | -- | -- | -- |
| 1747 | Tanjo Japan | 9.4 | 8.1 | 9.4 | -- | -- | -- | -- | -- | -- |
| 1748 | Tarui Japan | 9.4 | 7.9 | 8.6 | -- | -- | -- | -- | -- | -- |
| 1749 | Tokiwacho Japan | 9.4 | 7.7 | 8.6 | -- | -- | -- | -- | -- | -- |
| 1750 | Soka Japan | 9.4 | 8.8 | 11.2 | 10.3 | 9.9 | 10.3 | 11.7 | 12.5 | 14 |
| 1751 | Tachikawa Japan | 9.4 | 8.8 | 9 | 8.2 | 8.1 | 8.7 | 10.2 | 12.1 | 11.4 |
| 1752 | Imizu Japan | 9.4 | 8.1 | 8.3 | 7.8 | 7.6 | 7.8 | 8.9 | 9.5 | 9.4 |
| 1753 | Kinokawa Japan | 9.4 | 8.3 | 9.6 | 8.7 | 8.9 | 9.9 | 10.3 | 11.5 | 10.5 |
| 1754 | Nagato Japan | 9.4 | 8 | 9.7 | 9.1 | 8.5 | 9.6 | 10.8 | 11.4 | 11.8 |
