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2017-2023
World's most polluted cities
Most polluted city ranking based on annual average PM2.5 concentration (μg/m³)
2023
World Air Quality Report
PM2.5 legend
0-5
Meets WHO guideline
5.1-10
Exceeds by 1 to 2 times
10.1-15
Exceeds by 2 to 3 times
15.1-25
Exceeds by 3 to 5 times
25.1-35
Exceeds by 5 to 7 times
35.1-50
Exceeds by 7 to 10 times
>50.1
Exceeds by over 10 times
Rank | City | 2023 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  Hotan, China | 87.3 | 95 | 63.9 | 99.9 | 133.4 | 88.2 | 97.1 | 81.5 | 99.6 | 84.1 | 53.6 | 59.8 | 93.8 | 94.3 | 101.5 | 110.2 | 110.1 | 116 | 91.9 |
| 2 | Kashgar, China | 72.3 | 107 | 68.3 | 91 | 119.3 | 47.1 | 31.7 | 32.2 | 42.3 | 44 | 41.1 | 81.1 | 161.4 | 73.4 | 83.2 | 81 | 87.1 | 95.7 | 97.5 |
| 3 | Aksu, China | 58.8 | 81.7 | 57.4 | 98.2 | 119.8 | 32.5 | 26.7 | 22.6 | 27.5 | 33.3 | 35.4 | 72.2 | 100.1 | 55.5 | 51.2 | 58.4 | 54 | 74.1 | 69.8 |
| 4 | Kizilsu, China | 54.2 | 56.3 | 38.7 | 69.9 | 99 | 40.2 | 27 | 30.6 | 36.8 | 31.7 | 29.4 | 53.9 | 138.1 | 52.8 | 43.9 | 52 | 48.6 | 60 | 43.4 |
| 5 | Linfen, China | 51.7 | 89 | 89.6 | 53.7 | 51.1 | 36.8 | 32.7 | 27.3 | 26.8 | 35.7 | 60.2 | 44.3 | 71.8 | 49.1 | 55.5 | 52.5 | 61.7 | 68.2 | 80.6 |
| 6 | Puyang, China | 51.6 | 108.7 | 80.3 | 67.2 | 49.7 | 33.6 | 25.1 | 22.2 | 25.7 | 34.6 | 51.5 | 52.9 | 65.7 | 54.3 | 52.8 | 59.3 | 63.4 | 63.5 | 68.8 |
| 7 | Shihezi, China | 51.3 | 186.2 | 143.3 | 45.9 | 18.8 | 16.3 | 16.1 | 14.1 | 15.5 | 14.6 | 23.5 | 36.3 | 84.9 | 57.3 | 55.7 | 57.5 | 63.3 | 61.3 | 60.6 |
| 8 | Xianyang, China | 51.1 | 116.6 | 103.9 | 56.7 | 53.4 | 23.1 | 19.9 | 20.7 | 20.6 | 23.7 | 36.5 | 57.8 | 84.6 | 50.8 | 45.7 | 50.5 | 63.7 | 67.8 | 77.8 |
| 9 | Anyang, China | 50.6 | 90.4 | 83.8 | 63.8 | 52.1 | 30.5 | 21.7 | 22 | 25 | 28.6 | 50.6 | 61.4 | 77.7 | 51 | 50.8 | 61.5 | 70.3 | 72.9 | 81.1 |
| 10 | Hebi, China | 50.2 | 90.6 | 79.7 | 59.4 | 49.4 | 32.6 | 23.4 | 23.3 | 25.5 | 34.9 | 53.9 | 60.6 | 67.5 | 52.2 | 51.4 | 58.9 | 62.1 | 55.8 | 64.4 |
| 11 | Yigou, China | 50.2 | 81.1 | 84.5 | 60.7 | 51.8 | 39.1 | 25.7 | 22.8 | 28.7 | 31 | 46.9 | 60.2 | 69.4 | 56.4 | -- | -- | -- | -- | -- |
| 12 | Shahecheng, China | 49.5 | 82 | 71.7 | 60.8 | 47.5 | 34.1 | 24.3 | 25.1 | 23.9 | 33.5 | 54.5 | 58.7 | 77.4 | 47.7 | 44.1 | -- | -- | -- | -- |
| 13 | Xinxiang, China | 49 | 91.8 | 76.8 | 59.1 | 48.1 | 32 | 24.5 | 19.5 | 23.6 | 32.4 | 54.6 | 56.4 | 67.3 | 50 | 47.3 | 51.5 | 55.7 | 61.4 | 66.4 |
| 14 | Changji, China | 48.7 | 156.7 | 142.6 | 50.9 | 20.3 | 16.8 | 13.9 | 12.5 | 12.6 | 11.3 | 23.1 | 37.1 | 84.6 | 51.5 | 49.8 | 53.5 | 48.2 | 55 | 57.6 |
| 15 | Yanliang, China | 48.6 | 96.1 | 80 | 55.4 | 56.7 | 27 | 22.6 | 22.2 | 21.6 | 25.6 | 39.3 | 57.6 | 86.8 | 43 | 41 | 51 | 45.5 | -- | -- |
| 16 | Heze, China | 48.5 | 105.5 | 69.6 | 55.4 | 43.4 | 29.5 | 24.8 | 18.4 | 23.4 | 34 | 54.1 | 49.4 | 71.1 | 47.2 | 48.5 | 54.2 | 59.7 | 60.1 | 70 |
| 17 | Huangpi, China | 48.4 | 99 | 67.9 | 63.8 | 48.2 | 33.2 | 28.4 | 20.8 | 27.8 | 27.4 | 52.9 | 49.5 | 57.6 | 42.7 | 45.6 | -- | -- | -- | -- |
| 18 | Liaocheng, China | 48.2 | 96.4 | 66.6 | 65 | 46.1 | 30.5 | 23.7 | 19.9 | 23 | 33.3 | 54.1 | 48.5 | 67.8 | 43 | 47.6 | 53.9 | 58.8 | 60.3 | 72 |
| 19 | Yuncheng, China | 48.2 | 104 | 84 | 55.2 | 44.4 | 27.2 | 23.7 | 23.4 | 23.2 | 25 | 42.6 | 47.2 | 77.1 | 50.2 | 48.4 | 57.7 | 61.2 | 59.8 | 71.9 |
| 20 | Kaifeng, China | 48.1 | 100.6 | 79.5 | 58.7 | 49.1 | 27.2 | 22.2 | 17.5 | 22.2 | 29.9 | 49.7 | 51.6 | 67.3 | 50.2 | 47.8 | 55.5 | 61 | 64.6 | 66.8 |
| 21 | Zhoukou, China | 48.1 | 113.8 | 72.4 | 53.3 | 46.9 | 29.2 | 22.3 | 13.1 | 21.2 | 24.7 | 53.8 | 51.3 | 72.9 | 44.9 | 44.8 | 50.3 | 56.6 | 58.9 | 59.9 |
| 22 | Xinji, China | 48 | 68.7 | 67.1 | 58.9 | 41.9 | 33.9 | 20.9 | 21 | 20 | 40.8 | 57.9 | 62.5 | 78.6 | 44.9 | 42.1 | -- | -- | -- | -- |
| 23 | Xiangyang, China | 48 | 104.2 | 78.7 | 54.9 | 47.4 | 31.4 | 24.7 | 21.1 | 24.7 | 24.5 | 39.2 | 52.5 | 70.7 | 50.2 | 50.6 | 52.5 | 60.4 | 60.5 | 64.4 |
| 24 | Weinan, China | 48 | 105.8 | 94.9 | 55.9 | 58.3 | 25.8 | 18.1 | 19.4 | 19.9 | 24.9 | 40.1 | 46.9 | 75.1 | 51 | 45.3 | 52.5 | 55.6 | 58.2 | 68.8 |
| 25 | Xuchang, China | 47.8 | 108 | 80.9 | 54 | 46.5 | 25 | 21.3 | 15.7 | 23.4 | 26.8 | 55.7 | 49.3 | 64.6 | 46.9 | 45.1 | 53.6 | 60.6 | 64.2 | 63.2 |
| 26 | Yanta, China | 47.8 | 92.2 | 65.8 | 56.4 | 42.9 | 31.3 | 24 | 23.1 | 24.1 | 36 | 54.2 | 49.1 | 66.4 | 46.1 | 43.2 | -- | -- | -- | -- |
| 27 | Handan, China | 47.7 | 76.5 | 71.4 | 58.2 | 46.9 | 32.4 | 23.8 | 22.8 | 24.7 | 34.5 | 53.6 | 55.8 | 72.7 | 46.5 | 45.6 | 58.9 | 64.3 | 74 | 96.7 |
| 28 | Luohe, China | 47.7 | 114 | 75.4 | 54.3 | 45.7 | 28 | 21.9 | 15.6 | 24 | 25.9 | 47.3 | 50.2 | 67.5 | 51.2 | 49.7 | 55.4 | 60 | 62.6 | 63.7 |
| 29 | Shashi, China | 47.7 | 119.3 | 82.4 | 53.2 | 42.8 | 31.8 | 21.5 | 17.7 | 25.3 | 23 | 38.3 | 49.6 | 66.5 | 41.6 | 37.9 | 38.9 | 42.6 | -- | -- |
| 30 | Shangqiu, China | 47.5 | 108.8 | 65.9 | 54.3 | 43.2 | 26.2 | 22 | 16.2 | 22.5 | 27 | 57.6 | 51 | 72.6 | 46.4 | 45.8 | 52.7 | 72.6 | 61.9 | 61.8 |
| 31 | Yuci, China | 47.3 | 59.6 | 85.3 | 55.6 | 51.4 | 34.8 | 27.9 | 25.5 | 27.9 | 36.1 | 47.5 | 43.7 | 73.4 | -- | -- | -- | -- | -- | -- |
| 32 | Wujiaqu, China | 47.1 | 162.3 | 121.8 | 48.8 | 17.8 | 18.5 | 18 | 15.5 | 15.2 | 13.3 | 21.2 | 32.3 | 76.9 | 53.3 | 41.7 | 40.6 | 53.9 | 67.8 | 74.1 |
| 33 | Jingzhou, China | 46.9 | 117.6 | 81.3 | 53.6 | 41.6 | 30.8 | 21.1 | 16.8 | 24.7 | 23.5 | 35.4 | 48.7 | 66.4 | 42.7 | 35 | 36.1 | 45.3 | 47.7 | 55.7 |
| 34 | Yangliuqing, China | 46.9 | 66.8 | 66.3 | 64.1 | 40.7 | 33.7 | 23.7 | 25.2 | 22.7 | 39.8 | 56.9 | 50.1 | 70.8 | 40.5 | 43.1 | -- | -- | -- | -- |
| 35 | Luoyang, China | 46.7 | 88.5 | 88.8 | 55.5 | 46.5 | 30.7 | 24.1 | 22.8 | 27.4 | 30.5 | 39.8 | 44.1 | 61.6 | 47.4 | 44.9 | 50.7 | 62.4 | 59.9 | 72.5 |
| 36 | Luancheng, China | 46.5 | 68.9 | 72 | 57.8 | 43 | 30.1 | 20.6 | 21.3 | 22.5 | 40 | 52.2 | 58.2 | 74 | 45.9 | 44.8 | -- | -- | -- | -- |
| 37 | Wuhan, China | 46.3 | 94.1 | 65.5 | 56.9 | 41.5 | 33.7 | 27.9 | 18.4 | 27.7 | 24.5 | 50.8 | 48.7 | 66.7 | 45.9 | 46.7 | 36.5 | 44.4 | 46.9 | 51 |
| 38 | Yangcun, China | 46.3 | 59.3 | 67.8 | 74 | 46.1 | 37.1 | 26.9 | 27 | 26.9 | 37 | 50.8 | 39.5 | 62.1 | 39.1 | 43 | -- | -- | -- | -- |
| 39 | Linshui, China | 46.2 | 68.8 | 72.7 | 55.9 | 46.4 | 35.2 | 21 | 21.6 | 25.5 | 34 | 48.2 | 53.8 | 64.6 | 46.3 | 40.5 | -- | -- | -- | -- |
| 40 | Jiaozuo, China | 46.1 | 84.4 | 81.6 | 58.3 | 45.9 | 29.8 | 24.2 | 19.9 | 26.8 | 29.5 | 42.8 | 47.9 | 61.4 | 49.5 | 47.1 | 56.2 | 61.3 | 66.9 | 74.8 |
| 41 | Caidian, China | 46 | 94.5 | 65 | 55.9 | 42 | 34.4 | 28.9 | 18.8 | 29.9 | 26.5 | 53.6 | 48.4 | 54.5 | 42.7 | 40.3 | -- | -- | -- | -- |
| 42 | Dingtao, China | 45.8 | 102.2 | 67.4 | 54.8 | 35.3 | 27 | 19.7 | 11 | 18.6 | 28.1 | 57.7 | 50.7 | 68 | 45.2 | 41.3 | -- | -- | -- | -- |
| 43 | Xian, China | 45.7 | 107.6 | 99 | 51.7 | 51 | 22.5 | 17.2 | 18.7 | 19 | 21.7 | 30 | 46.7 | 73.7 | 48.6 | 41.1 | 49.3 | 56.6 | 59.9 | 70.2 |
| 44 | Jining, China | 45.3 | 93.7 | 66 | 58.7 | 44.5 | 29.8 | 24.3 | 18 | 22.9 | 26.2 | 44.2 | 46.4 | 66.1 | 43.6 | 48.1 | 53.4 | 56.6 | 50.1 | 56.2 |
| 45 | Yuxia, China | 45.2 | 102 | 82.9 | 51.8 | 51.5 | 22.8 | 17.7 | 17.1 | 18.8 | 23.2 | 26.9 | 50.4 | 81 | 38.8 | 38.4 | 44.5 | 37 | -- | -- |
| 46 | Nangong, China | 44.9 | 78.1 | 60.8 | 51.7 | 39 | 28.8 | 17.6 | 14.4 | 20.5 | 36.6 | 58.6 | 51.7 | 71.6 | 45.1 | 44.6 | -- | -- | -- | -- |
| 47 | Zhengzhou, China | 44.8 | 97.5 | 80 | 54 | 48.3 | 26.3 | 22 | 17.8 | 22.2 | 26 | 36.2 | 45.5 | 61.1 | 45.8 | 43.4 | 50.9 | 58.4 | 64.1 | 70 |
| 48 | Jingmen, China | 44.7 | 98.4 | 72 | 53 | 43.5 | 30.9 | 20.2 | 16.7 | 23.5 | 22.2 | 37.7 | 51.3 | 65.4 | 44.8 | 45.6 | 45.3 | 56.4 | 56.2 | 49.5 |
| 49 | Qingnian, China | 44.7 | 82.8 | 57.4 | 51.5 | 34.8 | 26.5 | 19.7 | 15.6 | 18.9 | 33 | 53.9 | 50.8 | 75.8 | 43 | 42 | -- | -- | -- | -- |
| 50 | Shijiazhuang, China | 44.6 | 60.7 | 77.1 | 60 | 46.7 | 33.3 | 20.7 | 20.4 | 22.6 | 35.8 | 46 | 49.2 | 65.5 | 43.8 | 46.5 | 57.6 | 64 | 76.7 | 98.8 |
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