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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1805 |  Ome Japan | 9.2 | 8.9 | 10.7 | 9.8 | 9.2 | 8.5 | 9.1 | 10.3 | 10.2 |
| 1806 | Gobo Japan | 9.2 | 7.2 | 8.1 | 7.6 | 7.8 | -- | -- | -- | -- |
| 1807 | Sagae Japan | 9.2 | 8.3 | 9.3 | 8 | 7.9 | 8.1 | 8.3 | 9 | 8.3 |
| 1808 |  Tanjung Tokong Malaysia | 9.2 | 10.4 | 13.2 | 12.9 | 14.6 | -- | -- | -- | -- |
| 1809 | Gamagori Japan | 9.1 | 7.4 | 8 | 7.9 | 8.2 | 8.9 | 10.6 | 11.5 | 10.7 |
| 1810 | Ichinomiya Japan | 9.1 | 7.9 | 8.9 | 8.6 | 8.5 | -- | 11.7 | 12.4 | 12.4 |
| 1811 | Toyota Japan | 9.1 | 7.9 | 7.7 | 7.5 | 7.4 | 7.9 | 9.2 | 9.7 | 9 |
| 1812 | Inzai Japan | 9.1 | 8 | 9.1 | 8.5 | 7.9 | 8.6 | 9.4 | 8.5 | 8.4 |
| 1813 | Urayasu Japan | 9.1 | 9 | 9.6 | 9.1 | 9.1 | -- | -- | -- | -- |
| 1814 | Koga Japan | 9.1 | 8.5 | 10.4 | 12.2 | 11.6 | 12.6 | 11.8 | -- | -- |
| 1815 | Najioshinmachi Japan | 9.1 | 7.3 | -- | -- | -- | -- | -- | -- | -- |
| 1816 | Ichikikushikino Japan | 9.1 | 8.5 | 10.7 | 9.7 | 9.4 | 13.2 | 13.8 | 14.2 | 14.5 |
| 1817 | Hadano Japan | 9.1 | 7.7 | 8.5 | 8.2 | 8.1 | 7 | 7.7 | 8.6 | 7.9 |
| 1818 | Amakusa Japan | 9.1 | 8.9 | 11.4 | 10.8 | 10.4 | 12.4 | 13.5 | 13.3 | 14.1 |
| 1819 | Kumano Japan | 9.1 | 7.4 | 8.4 | 8.3 | 8.2 | 8.7 | 9.6 | 12.6 | 11.6 |
| 1820 | Ikeda Japan | 9.1 | 7.2 | 8.4 | 8.2 | 7.5 | 8.5 | 13.2 | 12.6 | 13.2 |
| 1821 | Urado Japan | 9.1 | 7.9 | 8.9 | -- | -- | -- | -- | -- | -- |
| 1822 | Ekinan Japan | 9.1 | 8.2 | -- | -- | -- | -- | -- | -- | -- |
| 1823 | Honjo Japan | 9.1 | 7.9 | 8.2 | -- | -- | -- | -- | -- | -- |
| 1824 | Musashino Japan | 9.1 | 8.4 | 8.9 | 8.4 | 8.5 | 9.8 | 11 | 12.7 | 12.6 |
| 1825 | Tanabe Japan | 9.1 | 7.1 | 7.8 | 7.6 | 5.8 | 9 | 8.7 | -- | -- |
| 1826 | Toyouracho Oaza Kogushi Japan | 9.1 | 7.8 | -- | -- | -- | -- | -- | -- | -- |
| 1827 | Yamaguchi Japan | 9.1 | 7.6 | 8.9 | 8.8 | 8.5 | 9.1 | 10.8 | 10.1 | 12.1 |
| 1828 |  Los Banos Philippines | 9.1 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1829 |  Betong Thailand | 9.1 | 11.9 | 11.9 | 10.3 | 10.6 | -- | -- | -- | -- |
| 1830 |  Semarapura Indonesia | 9 | 12.9 | 18.7 | 19.7 | 19.2 | -- | -- | -- | -- |
| 1831 | Miyoshi Japan | 9 | 7.3 | 8 | 7.8 | 7.8 | -- | -- | -- | -- |
| 1832 | Abiko Japan | 9 | 7.9 | 8.6 | 9.5 | 12.3 | 12.1 | 13.1 | 13.2 | 13.1 |
| 1833 | Obama Japan | 9 | 8 | 8.2 | 7.2 | 7.1 | 9.3 | 11.4 | 12.1 | 11.7 |
| 1834 | Sabae Japan | 9 | 7.3 | 7.9 | 7.9 | 8.2 | 10.6 | 13.3 | 14.3 | 13.7 |
| 1835 | Sakai Japan | 9 | 8 | 8.5 | 8.1 | 7.6 | -- | 12.2 | 12.6 | 11.9 |
| 1836 | Yame Japan | 9 | 8.6 | 10.2 | 10.5 | 10.1 | 11.6 | 12.7 | 14.3 | 13.7 |
| 1837 | Iwaki Japan | 9 | 8 | 8.4 | 7.6 | 7.5 | 7.3 | 9.1 | 9.1 | 8.6 |
| 1838 | Miyoshi Japan | 9 | 7.6 | 8.9 | 8.9 | 8.6 | 10.4 | 10.9 | 11.1 | 11.6 |
| 1839 | Chitose Japan | 9 | 9.2 | 11.1 | 10.2 | 9.3 | -- | 11.9 | 11 | 11 |
| 1840 | Fujisawa Japan | 9 | 7.7 | 8.2 | 8.2 | 8.4 | 9.1 | 10.1 | 11.2 | 10.2 |
| 1841 | Nakacho Japan | 9 | 8.4 | -- | -- | -- | -- | -- | -- | -- |
| 1842 | Yamato Japan | 9 | 7.9 | 8.6 | 8.3 | 8.1 | 8.4 | 10.7 | 12 | 11.2 |
| 1843 | Aki Japan | 9 | 7.4 | 8.3 | 8.4 | 7.6 | 9.3 | 9.2 | 10 | 10.8 |
| 1844 | Miyazu Japan | 9 | 7.8 | 8.5 | 8 | 7.7 | 8.2 | 9.9 | 10.8 | 9.8 |
| 1845 | Toba Japan | 9 | 6.9 | 8.1 | 6.9 | 6.7 | 6.9 | 8.6 | 9 | 10.7 |
| 1846 | Iwanuma Japan | 9 | 8.4 | 9.5 | 8.1 | 7.6 | -- | -- | -- | -- |
| 1847 | Shiroishi Japan | 9 | 7.9 | 8.3 | 7.6 | 8.5 | 8.5 | 10.3 | 10.2 | 10.1 |
| 1848 | Isahaya Japan | 9 | 8.7 | 9.5 | 9.4 | 11.1 | 12.6 | 14.5 | 9.4 | 14.6 |
| 1849 | Miyamotomachi Japan | 9 | 7.7 | -- | -- | -- | -- | -- | -- | -- |
| 1850 | Hata Japan | 9 | 7.4 | 8.4 | -- | -- | -- | -- | -- | -- |
| 1851 | Chichibu Japan | 9 | 8.7 | 10.3 | 8.7 | 8.8 | 9.7 | 14.2 | 14.4 | 12.9 |
| 1852 | Kawagoe Japan | 9 | 8.2 | 9 | 8.4 | 8.1 | 8.4 | 9.9 | 10.5 | 10.6 |
| 1853 | Miyakawacho Japan | 9 | 8.7 | -- | -- | -- | -- | -- | -- | -- |
| 1854 | Tokorozawa Japan | 9 | 8.1 | 8.8 | 8.5 | 9.4 | 10.3 | 13.1 | 14.2 | 14 |
