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
| Rank | City | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|
| 855 |  Quanzhou China | 18.8 | 16.5 | 21.6 | 17.8 | 20.6 | 20 | 24.5 | 25.1 | 26.2 |
| 856 |  Palkalaiperur India | 18.8 | -- | -- | -- | -- | -- | -- | -- | -- |
| 857 |  Hongseong South Korea | 18.8 | 18.3 | 19.7 | 19.4 | 20.2 | -- | 28.6 | -- | -- |
| 858 | Suwon South Korea | 18.8 | 17.9 | 19.5 | 18.2 | 19.5 | 21 | 25.5 | 23.6 | 25.8 |
| 859 |  Bang Talat Thailand | 18.8 | 20.1 | 24.2 | -- | -- | -- | -- | -- | -- |
| 860 | Chamarajanagar India | 18.7 | 18.6 | -- | -- | -- | -- | -- | -- | -- |
| 861 | Gimpo South Korea | 18.7 | 19.2 | 21.6 | 20.1 | 22.4 | 20.9 | 26.6 | 24 | 28.4 |
| 862 | Incheon South Korea | 18.7 | 19.1 | 19.7 | 18.7 | 19.9 | 17.7 | 22.8 | -- | -- |
| 863 | Gimje South Korea | 18.7 | 16.3 | 16.3 | 26 | 23.2 | -- | 29.4 | 24.8 | 24.5 |
| 864 | Khlong Luang Thailand | 18.7 | 19.6 | 20.2 | 20.6 | 20.6 | 21.7 | 23 | -- | -- |
| 865 | Aranyaprathet Thailand | 18.7 | 18 | 18.3 | 18.8 | 16.9 | 16.5 | -- | -- | -- |
| 866 |  Siem Reap Cambodia | 18.6 | 24.7 | -- | -- | -- | -- | -- | -- | -- |
| 867 | Yangpyeong South Korea | 18.6 | 18 | 19.7 | 18.8 | 18.8 | -- | 25.4 | 23.8 | 27.6 |
| 868 | Hwayang South Korea | 18.6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 869 | San Kamphaeng Thailand | 18.6 | 21.3 | -- | -- | -- | -- | -- | -- | -- |
| 870 | Qujing China | 18.5 | 18.2 | 22.1 | 21.2 | 22.2 | 20.2 | 21 | 28 | 28.2 |
| 871 | Siheung South Korea | 18.5 | 19.6 | 22.4 | 20.5 | 22.2 | 20 | 30.6 | 28.7 | 26.6 |
| 872 | Samsan South Korea | 18.5 | 10.5 | 14.6 | -- | -- | -- | -- | -- | -- |
| 873 | Loei Thailand | 18.5 | 26 | 32.8 | -- | -- | -- | -- | -- | -- |
| 874 | Phra Pradaeng Thailand | 18.5 | 18.6 | 21.2 | 19.7 | 20.9 | 19.9 | 27.1 | -- | -- |
| 875 | Mae Sot Thailand | 18.5 | 23.3 | 13.3 | -- | -- | -- | -- | -- | -- |
| 876 |  Nukus Uzbekistan | 18.5 | 15.1 | 14.8 | -- | -- | -- | -- | -- | -- |
| 877 | Zhuhai China | 18.4 | 18.1 | 17.7 | 16.7 | 19 | 18.3 | 24 | 26.1 | 28.8 |
| 878 | Chifeng China | 18.4 | 18 | 21 | 15.4 | 18.5 | 19.8 | 21.7 | 28.4 | 31.3 |
| 879 | Madikeri India | 18.4 | 18.2 | 18.7 | 21.1 | 22.1 | -- | -- | -- | -- |
| 880 | Cheongyang South Korea | 18.4 | 17 | 20.5 | 19 | 19.3 | -- | 29.5 | -- | -- |
| 881 |  Kinmen Taiwan | 18.4 | 18.3 | -- | -- | -- | -- | -- | -- | -- |
| 882 |  Petaling Jaya Malaysia | 18.3 | 22.4 | 28 | 26.5 | 32.5 | 23.6 | 19.6 | -- | -- |
| 883 | Yangju South Korea | 18.3 | 17.7 | 20.1 | 19.4 | 19 | -- | 27.4 | 28.6 | 32.5 |
| 884 | Lam Luk Ka Thailand | 18.3 | 18.6 | 24.7 | 23.7 | 24.6 | 25 | 23.2 | -- | -- |
| 885 | Ningde China | 18.2 | 14.3 | 15.8 | 15.3 | 19.6 | 21.5 | 23.6 | 24.4 | 26.3 |
| 886 | Tirupur India | 18.2 | -- | -- | -- | -- | -- | -- | -- | -- |
| 887 | Bucheon South Korea | 18.2 | 17.1 | 18.6 | 17.4 | 21.9 | 20.9 | 30.8 | 27.3 | 25.6 |
| 888 | Gunpo South Korea | 18.2 | 18.2 | 20.2 | 18.3 | 19.9 | -- | 25.5 | 26.6 | 27.2 |
| 889 | Iksan South Korea | 18.2 | 15.9 | 20.9 | 22.1 | 18.7 | -- | 30.3 | 28.3 | 34 |
| 890 | Yongsan-dong South Korea | 18.2 | 18.1 | -- | -- | -- | -- | -- | -- | -- |
| 891 |  Kurunegala Sri Lanka | 18.2 | 18.8 | 16.7 | 16.1 | -- | -- | -- | -- | -- |
| 892 | Puttalam Sri Lanka | 18.2 | 18.4 | 14.3 | -- | -- | -- | -- | -- | -- |
| 893 | Adampan Sri Lanka | 18.2 | 23.4 | -- | -- | -- | -- | -- | -- | -- |
| 894 | Chiang Mai Thailand | 18.2 | 26.4 | 33.4 | 18.4 | 24.9 | 30.5 | 32.3 | 24.5 | 22.7 |
| 895 | Nai Mueang Thailand | 18.2 | 27 | 26.8 | 24.3 | -- | -- | -- | -- | -- |
| 896 | Huizhou China | 18.1 | 17.9 | 18.9 | 17.1 | 20 | 20.2 | 25.1 | 27 | 29.1 |
| 897 | Mysuru India | 18.1 | 19.4 | -- | -- | -- | -- | -- | -- | -- |
| 898 |  Apalit Philippines | 18.1 | 19.7 | -- | -- | -- | -- | -- | -- | -- |
| 899 | Dangjin South Korea | 18.1 | 15.5 | 22.1 | 20.8 | 22 | -- | 31.7 | 25.7 | 24.6 |
| 900 | Hwaseong South Korea | 18.1 | 19.2 | 21.8 | 21 | 21.8 | 22.5 | 29.1 | 26.7 | 25.4 |
| 901 | Gunsan South Korea | 18.1 | 15.3 | 16.8 | 19.7 | 19.6 | 20.3 | 27 | 25.6 | 24.9 |
| 902 | Hang Dong Thailand | 18.1 | 26.1 | 30.5 | 23.4 | 29.8 | 36.8 | 38 | -- | -- |
| 903 | Lampang Thailand | 18.1 | -- | -- | -- | -- | -- | -- | -- | -- |
| 904 | Ban Karon Thailand | 18.1 | 13.2 | -- | -- | -- | -- | -- | -- | -- |
