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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2005 |  Matsumoto Japan | 8.1 | 7.3 | 8.2 | 8.4 | 8.4 | 8.6 | 9.7 | 9.5 | 9.6 |
| 2006 | Minamiuonuma Japan | 8.1 | 6.9 | 7.6 | 6.9 | 6.8 | -- | 8.3 | 9.4 | 9.9 |
| 2007 | Seki Japan | 8.1 | 7.8 | 7.4 | -- | -- | -- | -- | -- | -- |
| 2008 | Fujieda Japan | 8.1 | 7 | 7.8 | 7.3 | 7.5 | -- | 9.7 | 10.8 | 11.5 |
| 2009 | Izunokuni Japan | 8.1 | 6.9 | 7.5 | 7.1 | 8 | -- | 9.5 | 10.5 | 11.9 |
| 2010 | Shimoda Japan | 8.1 | 7.1 | 8.5 | 8 | 8.3 | -- | 9.2 | 11.2 | 10.3 |
| 2011 | Hinohara Japan | 8.1 | 7 | 7.5 | 6.9 | 7.2 | 7.9 | -- | -- | -- |
| 2012 | Toyama Japan | 8.1 | 7.3 | 8.1 | 7.7 | 7.5 | 7.5 | 8.4 | 8.1 | 8 |
| 2013 | Hagi Japan | 8.1 | 6.7 | 8.3 | 8.9 | 11 | 10.8 | 12.1 | 10.8 | 11.1 |
| 2014 | Yoshida Japan | 8.1 | 6.8 | -- | -- | -- | -- | -- | -- | -- |
| 2015 | Hachinohe Japan | 8 | 7 | 8.3 | 7.8 | 8 | 9.7 | 11.4 | 10.5 | 10.4 |
| 2016 | Tateyama Japan | 8 | 6.8 | 7.3 | 6.9 | 7 | 8.7 | 9.9 | 11.1 | 10.1 |
| 2017 | Torami Japan | 8 | 7 | -- | -- | -- | -- | -- | -- | -- |
| 2018 | Mikata Japan | 8 | 6.4 | -- | -- | -- | -- | -- | -- | -- |
| 2019 | Ono Japan | 8 | 6.8 | 7.2 | 6.8 | 6.9 | 9.3 | 11.4 | 10.7 | 11.6 |
| 2020 | Gujo Japan | 8 | 6.5 | 6.8 | 6.5 | 6.8 | -- | -- | -- | -- |
| 2021 | Matsushima Japan | 8 | 7.1 | 8.1 | 7.5 | 7.5 | -- | -- | -- | -- |
| 2022 | Kiso Japan | 8 | 8.1 | 8.3 | 7.5 | 7.4 | 7.2 | 8.1 | 8.7 | 7.6 |
| 2023 | Nagaoka Japan | 8 | 7.6 | 7.9 | 8.3 | 7.9 | 7.5 | 8.5 | -- | -- |
| 2024 | Shimada Japan | 8 | 6.6 | 7.3 | 6.9 | 7.6 | -- | -- | -- | -- |
| 2025 | Amarume Japan | 8 | 7.2 | -- | -- | -- | -- | -- | -- | -- |
| 2026 | Inuyama Japan | 7.9 | 6.6 | 7.6 | 7.7 | 7.6 | 8.7 | 11.1 | 12 | 10.8 |
| 2027 | Kaizu Japan | 7.9 | 7 | 7.6 | -- | -- | -- | -- | -- | -- |
| 2028 | Iki Japan | 7.9 | 7.5 | 8.5 | 7.7 | 10.1 | 11.6 | 12.6 | 14.2 | 13.5 |
| 2029 | Unzen Japan | 7.9 | 8.1 | 8.6 | 8.4 | 9 | 10.3 | 10.4 | -- | -- |
| 2030 | Sado Japan | 7.9 | 8.2 | 8.4 | 7.6 | 7.6 | 7.9 | 9.3 | 11.4 | 9.5 |
| 2031 | Sakurai Japan | 7.9 | 6.5 | 7.3 | -- | -- | -- | -- | -- | -- |
| 2032 | Yamagata Japan | 7.9 | 7.3 | 8.5 | 7.6 | 8.3 | 8.4 | 9.1 | 9.6 | 8.8 |
| 2033 | Nanbu Japan | 7.9 | 6.8 | 7.1 | 6.7 | 5.5 | -- | -- | -- | -- |
| 2034 | Togane Japan | 7.8 | 6.9 | 7.5 | 7.1 | 7.2 | 7.7 | 9.2 | 9.2 | 9.1 |
| 2035 | Naraha Japan | 7.8 | 6.4 | 10.1 | 8.5 | 8.3 | 7.8 | 10.3 | 10.7 | 10 |
| 2036 | Muroran Japan | 7.8 | 7.3 | 9.2 | 8.3 | -- | -- | -- | -- | -- |
| 2037 | Tosa Japan | 7.8 | 6.1 | 9.5 | 11.7 | -- | -- | -- | -- | -- |
| 2038 | Morigo Japan | 7.8 | 7 | 8.1 | -- | -- | -- | -- | -- | -- |
| 2039 | Yamamoto Japan | 7.8 | 7.8 | 7.2 | 6.9 | 10.2 | -- | -- | -- | -- |
| 2040 | Shinjo Japan | 7.8 | 7.2 | 8.8 | 8.7 | 8.6 | 8.2 | 9.1 | 9.2 | 8.6 |
| 2041 | Akita Japan | 7.7 | 7.2 | 8.1 | 7.6 | 8.1 | 9.6 | 12.2 | 11.5 | 10.9 |
| 2042 | Ekimaemachi Japan | 7.7 | 6.7 | -- | -- | -- | -- | -- | -- | -- |
| 2043 | Furukawamachi Japan | 7.7 | 6.7 | -- | -- | -- | -- | -- | -- | -- |
| 2044 | Hitachiomiya Japan | 7.7 | 6.9 | 9 | 8.4 | 7.9 | 8.3 | 9.2 | 9.7 | 8.7 |
| 2045 | Nonoichi Japan | 7.7 | 7.1 | 7.9 | 7.9 | 10.4 | 9.7 | 10.6 | 10.8 | 11.3 |
| 2046 | Ichinoseki Japan | 7.7 | 7.4 | 8.1 | 7.1 | 7.7 | 7.1 | 8.7 | 9 | 9.6 |
| 2047 | Minamiashigara Japan | 7.7 | 6.9 | 7.7 | 7 | 7 | 6.2 | 7.5 | 8 | 7.1 |
| 2048 | Kesennuma Japan | 7.7 | 6.8 | 8.1 | 7.3 | 7.4 | 7.2 | 9.3 | 9.5 | -- |
| 2049 | Suwa Japan | 7.7 | 6.8 | 7.7 | 7.2 | 7.1 | 7.6 | 8.3 | 9.9 | 8.6 |
| 2050 | Arata Japan | 7.7 | 7 | 7.5 | 8.8 | 9.8 | -- | -- | -- | -- |
| 2051 |  Carmona Philippines | 7.7 | 7.4 | 8.9 | 4.5 | 8 | -- | 9.1 | 10.9 | 14.8 |
| 2052 |  Ban Tai Thailand | 7.7 | 7.9 | 13.3 | -- | -- | -- | -- | -- | -- |
| 2053 | Noshiro Japan | 7.6 | 7.3 | 8.4 | 6.6 | 10.9 | 9.7 | 12 | 13.8 | 9.4 |
| 2054 | Odate Japan | 7.6 | 7.2 | 7.8 | 7.2 | 7.4 | 7.3 | 9.7 | 9.8 | 9.2 |
