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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2055 |  Choshi Japan | 7.6 | 6.7 | 7.4 | 6.9 | 6.8 | 6.7 | -- | -- | -- |
| 2056 | Shirakawa Japan | 7.6 | 6.7 | 7.9 | 6.6 | 9.9 | 9 | 10.2 | 11.3 | 10.5 |
| 2057 | Saku Japan | 7.6 | 6.4 | 7.4 | 7 | 6.6 | 7.5 | 9.3 | 10.9 | 9.9 |
| 2058 | Sakaihigashi Japan | 7.6 | 7.3 | 8.6 | 5.5 | 7.8 | -- | -- | -- | -- |
| 2059 | Nasukarasuyama Japan | 7.6 | 7 | 7.6 | 8.8 | 8.4 | 9.2 | 9.5 | 9.3 | 9.5 |
| 2060 | Nikko Japan | 7.6 | 7.8 | 8.5 | 8.4 | 7.9 | 8.5 | 8.8 | 9.5 | 7.4 |
| 2061 | Murayama Japan | 7.6 | 6.4 | 7.7 | 7.1 | 8.2 | 8.3 | 8.3 | 8.6 | 8.1 |
| 2062 | Minami-Soma Japan | 7.5 | 6.8 | -- | -- | -- | -- | -- | -- | -- |
| 2063 | Sumoto Japan | 7.5 | 5.5 | 6.7 | 7.3 | 6.8 | 7.5 | 8.7 | 9.4 | 9.3 |
| 2064 | Ueda Japan | 7.5 | 6.8 | 7.6 | 6.1 | 7.3 | -- | -- | -- | -- |
| 2065 | Niigata Japan | 7.5 | 7 | 7.6 | 7 | 6.9 | 7.1 | 8.6 | 9.1 | 8.5 |
| 2066 | Ishigaki Japan | 7.5 | 7.4 | 9.1 | 6.2 | 7.5 | 7.6 | 9.2 | 8.9 | 9 |
| 2067 | Naha Japan | 7.5 | 6.9 | 7.9 | 5.8 | 6.5 | -- | 8 | -- | -- |
| 2068 | Minamiizu Chō Japan | 7.5 | 5.9 | 6.1 | -- | -- | -- | -- | -- | -- |
| 2069 |  Hualien City Taiwan | 7.5 | 8.8 | 8.2 | -- | -- | -- | -- | -- | -- |
| 2070 |  Phra Sing Thailand | 7.5 | 12.3 | 23.1 | -- | -- | -- | -- | -- | -- |
| 2071 | Gero Japan | 7.4 | 6 | 6.3 | 6.1 | 6.3 | 6.2 | 7.5 | -- | -- |
| 2072 | Kitamachi Japan | 7.4 | 6.8 | 10.2 | -- | -- | -- | -- | -- | -- |
| 2073 | Koga Japan | 7.4 | 6.8 | 7.2 | 6.7 | 8.7 | 9.6 | 10.7 | 10.9 | 12.8 |
| 2074 | Suzu Japan | 7.4 | 5.1 | 5.9 | 7.2 | 6.6 | 6.8 | 7.7 | 7.9 | 7.3 |
| 2075 | Sendai Japan | 7.4 | 6.6 | 7.8 | 6.6 | 6.8 | 6.8 | 8.6 | 9 | 8.7 |
| 2076 | Kashiwazaki Japan | 7.4 | 5.1 | 4.2 | 7.2 | 6.8 | -- | -- | -- | -- |
| 2077 | Higashichichibu Japan | 7.4 | 6.4 | 8.2 | 6.8 | 7 | -- | 13 | 12.5 | 10.2 |
| 2078 |  Ganzizhou China | 7.3 | 7.6 | 7.6 | 8.4 | 7.7 | 8.7 | 11.5 | 17.9 | 15.6 |
| 2079 | Shigatse China | 7.3 | 10.2 | 9.6 | 9 | 9.3 | 9 | 10.7 | 14.6 | 12.5 |
| 2080 | Yokote Japan | 7.3 | 7.4 | 8.5 | 7.4 | 16.3 | -- | 15.9 | 15 | 12.6 |
| 2081 | Hitachi Japan | 7.3 | 6.4 | 6.9 | 6.7 | 6.3 | 8.6 | 9.5 | 10.5 | 9.3 |
| 2082 | Kitaibaraki Japan | 7.3 | 6.3 | 6.9 | 6.6 | 7.3 | 9.1 | 9 | 9 | 8.9 |
| 2083 | Nanao Japan | 7.3 | 6.8 | 7.7 | 7.6 | 7.2 | 7.6 | 11.2 | 11.2 | 10.7 |
| 2084 | Nagano Japan | 7.3 | 7.1 | 7.7 | 7.2 | 7.5 | 7.7 | 8.3 | 9 | 10.5 |
| 2085 | Aomori Japan | 7.2 | 10.1 | 10.4 | 7.9 | 8.3 | 10.3 | 11.6 | 10.2 | 10.5 |
| 2086 | Kobado Japan | 7.2 | 6.2 | -- | -- | -- | -- | -- | -- | -- |
| 2087 | Asahikawa Japan | 7.2 | 7.8 | 8.1 | 7 | 7.2 | 7.6 | 9 | 9.2 | 10.2 |
| 2088 | Senhoshi Japan | 7.2 | 7.3 | -- | -- | -- | -- | -- | -- | -- |
| 2089 | Hanamaki Japan | 7.2 | 7.2 | 8.2 | 7.5 | 9.6 | 7.7 | 8.8 | 9.2 | 11.2 |
| 2090 | Amami Japan | 7.2 | 6.8 | 7.6 | -- | -- | -- | -- | -- | -- |
| 2091 | Tome Japan | 7.1 | 6.2 | 7.4 | 7 | 7.1 | 7.6 | -- | -- | -- |
| 2092 | Ina Japan | 7.1 | 6.1 | 7.1 | 7.6 | 7.2 | 7.3 | 8.4 | 8.5 | 8.6 |
| 2093 |  Palu Indonesia | 7 | 8.4 | 17.4 | 12.4 | 6.2 | -- | -- | -- | -- |
| 2094 | Wajima Japan | 7 | 3.7 | 6.2 | 7.6 | 7.3 | 7.2 | 8 | 7.8 | 8 |
| 2095 | Wakuya Japan | 7 | 5.9 | 7 | 6.5 | 6.5 | 7.2 | 8.5 | 8.9 | 7.7 |
| 2096 | Miyakojima Japan | 7 | 7.2 | 7.2 | 7.5 | 7.2 | -- | 9.6 | 8.1 | 8.9 |
| 2097 | Shinshiro Japan | 6.9 | 5.7 | 6.3 | 6.2 | 6.4 | 8.1 | 9.9 | -- | -- |
| 2098 | Minamiaizu Japan | 6.9 | 5.9 | 6.7 | 6 | 5.9 | 5.8 | 9 | 9.1 | 9 |
| 2099 | Kanazawa Japan | 6.9 | 6 | 6.6 | 6.9 | 7.5 | 7.3 | 8.3 | 8.4 | 8.5 |
| 2100 | Nagamachi Japan | 6.9 | 6 | 6.7 | -- | -- | -- | -- | -- | -- |
| 2101 | Okaya Japan | 6.9 | 7.5 | 7.9 | 7.3 | 7 | 7.1 | 8.2 | -- | -- |
| 2102 | Guanshan Taiwan | 6.9 | 6.9 | 6.1 | -- | -- | -- | -- | -- | -- |
| 2103 | Taitung Taiwan | 6.9 | 6.8 | 6.7 | 5.8 | 7.8 | 7.3 | 8.7 | 9.3 | 9.3 |
| 2104 | Otaru Japan | 6.8 | 7.1 | 8.1 | 7 | 6.6 | 5.9 | 9.2 | 8.7 | 8.3 |
