World's most polluted cities (historical data 2017-2021)

Most polluted city ranking based on annual average PM2.5 concentration (μg/m³)

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2021

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World air quality report

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2021 World air quality report

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Meets WHO guideline
Exceeds by 1 to 2 times
Exceeds by 2 to 3 times
Exceeds by 3 to 5 times
Exceeds by 5 to 7 times
Exceeds by 7 to 10 times
Exceeds by over 10 times
RankAscending icon
City 2021 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2020 2019 2018 2017
1 China
Hotan, China
101.5 - - 158 91.1 167.4 57.4 70.9 93.2 79.3 126.1 111.5 62.6 110.2 110.1 116 91.9
2 China
Kashgar, China
83.2 93.1 100.5 123.4 60.4 89.8 18.1 26.7 46.4 64.6 99.5 147.1 116.6 81 87.1 95.7 97.5
3 China
Shihezi, China
55.7 164 130.3 48 19.5 24 16.5 15.8 16.4 19.4 31.3 54.4 121.6 57.5 63.3 61.3 60.6
4 China
Linfen, China
55.5 79 82.6 75.9 51.7 43.9 37.5 28.9 34.3 39 52.2 66.2 69.8 52.5 61.7 68.2 80.6
5 China
Puyang, China
52.8 100.9 67.8 68.9 44 37.8 31.1 21.1 29.3 24.1 62.6 77.4 66.5 59.3 63.4 63.5 68.8
6 China
Hebi, China
51.4 84.6 72.2 72.7 48.6 39.5 34 21 31.6 29.9 53.7 69.7 59.9 58.9 62.1 55.8 64.4
7 China
Aksu, China
51.2 61.3 67 87.4 44.7 42.5 21 18.1 22.2 31.6 46.3 88.2 76.1 58.4 54 74.1 69.8
8 China
Anyang, China
50.8 89.6 80.1 72.7 47.1 38.5 29.4 20.3 27 24.7 52.1 71.1 58.9 61.5 70.3 72.9 81.1
9 China
Xiangyang, China
50.6 94.4 69.1 53.9 44.8 41.2 31.3 23.3 22.3 25.7 45.4 70.6 77.7 52.5 60.4 60.5 64.4
10 China
Changji, China
49.8 154.3 122.6 49 18.8 22.5 11.8 13.3 14 18.8 27.4 48.5 101.3 53.5 48.2 55 57.6
11 China
Luohe, China
49.7 104.8 68.5 55.5 42 33.8 29.8 18.8 22.8 22.7 58.4 66.2 74 55.4 60 62.6 63.7
12 China
Turpan, China
49.6 79.4 79.6 50 31.6 58.7 19.7 23 19.3 28.3 34.6 71.7 92.1 49.5 56.3 56.1 66.1
13 China
Zibo, China
49.2 83.3 61.5 71.6 47.4 41.3 32 24.5 31.8 23.9 48.2 58.1 63.1 53.9 57.7 55.9 63.1
14 China
Heze, China
48.5 97.3 58.5 61.4 42 38.7 27.7 17.6 25.8 20.9 57.4 66.4 69.5 54.2 59.7 60.1 70
15 China
Yuncheng, China
48.4 80.5 66.4 67.3 40.3 35.2 27.5 20.9 25.7 24 42.1 73.6 77.9 57.7 61.2 59.8 71.9
16 China
Jining, China
48.1 96.5 53 64 42.2 42.7 29.9 17.9 25.9 21.8 51.3 66.7 65.6 53.4 56.6 50.1 56.2
17 China
Kaifeng, China
47.8 101 67.4 59.7 41.3 34.2 27.5 17.6 23.8 20.9 52.4 65.9 64 55.5 61 64.6 66.8
18 China
Xuzhou, China
47.8 79.4 62.7 55.7 43.6 40.8 34.4 18.8 28.9 27.6 46.4 63.4 72.2 49.7 57.4 65.5 67.4
19 China
Liaocheng, China
47.6 85 57.7 63.4 45.2 39.7 30.8 21.7 29 22.4 51 60.5 64.3 53.9 58.8 60.3 72
20 China
Xinxiang, China
47.3 72 55.2 69.8 48.6 37.4 32.1 17.7 25.9 26.4 58.5 66.7 57 51.5 55.7 61.4 66.4
21 China
Jiaozuo, China
47.1 83.6 69.3 68.1 46.2 37.2 29.7 18 26.2 25.5 47.2 61.9 53.2 56.2 61.3 66.9 74.8
22 China
Nanyang, China
47.1 107.5 69 53.4 37.3 30.5 25.8 18.8 20.2 20.1 36.7 69 74.7 51.4 60 60.6 57.1
23 China
Pingdingshan, China
47.1 87.3 61 59.2 45.3 34.1 27.7 18.9 25.8 25.2 50.5 67.6 63.2 51.2 60.1 65.1 67.3
24 China
Wuhan, China
46.7 67.7 50.6 47.7 45.6 39.1 35.6 24.4 27.7 30.9 43.6 61.3 85.9 36.5 44.4 46.9 51
25 China
Shijiazhuang, China
46.5 67.6 72.6 82.6 45.8 41.7 31 24.9 25.9 29.3 37.2 51.5 44 57.6 64 76.7 98.8
26 China
Taiyuan, China
46.3 66.3 54.8 83.3 45.5 50.3 31.1 26.2 27 28.2 36.5 51 48.4 52.1 53.4 55.9 63.7
27 China
Yangquan, China
45.9 63.3 61.3 84.9 45.1 40.2 36.3 29 30.9 29.9 35 48.8 41.9 46.3 50.6 59 63.6
28 China
Shangqiu, China
45.8 97.3 55.5 56.9 39.4 36.2 26.6 15.5 19.6 19.6 50.2 63.6 70.4 52.7 72.6 61.9 61.8
29 China
Xianyang, China
45.7 82.5 85.3 62.5 32.1 33.5 26.5 20.5 22.6 17 28 63.2 77.4 50.5 63.7 67.8 77.8
30 China
Handan, China
45.6 71.7 62.5 61.2 40.6 40.8 35.2 23.5 25.6 25.5 46.4 58.4 51.9 58.9 64.3 74 96.7
31 China
Huangpi, China
45.6 - - 48.1 43.3 43.6 39 31.5 29.7 35.3 42.2 59.9 79.5 - - - -
32 China
Jingmen, China
45.6 87.7 62.3 51.6 41.9 31.3 25.4 17.2 20.8 21.9 41 62.6 77.1 45.3 56.4 56.2 49.5
33 China
Baoding, China
45.4 55.7 69.2 73.1 39.5 34.6 29.4 22.7 46 31.1 42.9 54.5 47.7 52.2 57.7 70.7 92.7
34 China
Urumqi, China
45.4 123 114.2 51.9 19.1 21.1 12.5 14.1 14.8 18.7 27.8 43 78.1 51.2 54.5 59.2 76
35 China
Fengrun, China
45.3 34 - 92.7 55.4 43.8 34.4 30.7 43 28.7 41.9 46.9 40.1 - - - -
36 China
Weinan, China
45.3 75 73.3 71.2 37.8 31 23.7 19.6 20.9 16.7 39.8 70.6 66.9 52.5 55.6 58.2 68.8
37 China
Xuchang, China
45.1 99.4 65.6 53.2 37.6 32 26.6 16.8 21.3 21.9 46.4 57.2 65 53.6 60.6 64.2 63.2
38 China
Luoyang, China
44.9 77.6 61.5 69.4 47 33.1 26.3 17.5 25.1 24 42.1 63.7 52.5 50.7 62.4 59.9 72.5
39 China
Xinzhou, China
44.9 79 69.3 86.3 41.4 44.4 27.1 24.3 26.4 25 24.9 41 39.6 44.4 41.7 51.4 62.6
40 China
Luancheng, China
44.8 83.7 - 78.5 41.3 42.3 41.3 31.7 28.8 32.7 43.6 54.9 47.9 - - - -
41 China
Zhoukou, China
44.8 101 61.3 47.2 33.9 30.4 25.2 14.5 19.8 20.4 49.9 62.1 70.2 50.3 56.6 58.9 59.9
42 China
Zaozhuang, China
44.8 81.6 54.4 54 38.9 38.4 32.5 18.5 26 25.1 44.2 59.1 66.6 54.8 59.6 57.6 62
43 China
Fuyang, China
44.7 80.2 59.2 53.5 42.4 34.8 25.7 15.4 23.8 24.3 44.1 62.1 70.2 50.4 51.9 54.4 66.9
44 China
Linyi, China
44.7 86 55.3 58.5 39.2 35.8 28.5 16.7 21.5 19.8 42.5 60.1 72.2 48.4 57.7 50.2 56.4
45 China
Zigong, China
44.4 83.1 79.3 48.8 32.9 35.9 27.5 17.1 17.2 22 28.4 61.7 73.2 45.1 47.5 56.8 69.3
46 China
Shahecheng, China
44.1 91.8 - 68.1 41.7 44.2 40 32.1 29.2 27.9 44.5 56.9 54.3 - - - -
47 China
Dezhou, China
44.1 73.8 56.1 62.3 42.7 37.7 28.5 22.3 25.8 21.4 47.2 54.1 57.9 50.1 53.4 54.8 68.5
48 China
Taian, China
44.1 81.9 54.3 63.1 38.5 37.4 28.2 20.2 26.8 18.8 37.8 57.4 64.4 51.2 57.6 51.7 57.5
49 China
Xingtai, China
44 69.6 64.4 67.4 40.7 39.6 28.1 22.6 24.3 25.6 40.2 52.7 48.4 55.9 63.5 76.7 103.7
50 China
Shouguang, China
43.9 77.4 50.9 63.6 38.1 33.7 27.1 21.5 25.5 25.6 49.5 52.5 61.8 49.7 57.2 52.6 64.2

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