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
51 Nepal
Siddharthanagar, Nepal
64.7 149.6 151.7 80.7 85 32.4 23.5 18.8 21 22.7 - - 81.8 - - - -
52 India
Fatehabad, India
63.3 92 62.4 57.2 45.9 48 47.2 35.7 32.8 17.9 52.6 137.3 94.2 78.5 - - -
53 India
Bewar, India
61.4 128.2 68.8 43.6 32.2 34.8 29.8 26.2 28.3 26.6 55.8 141.8 112.6 - - - -
54 India
Kaimla, India
60.9 - 69.7 67.6 50.1 49.8 50 34.1 40 27.2 71.1 106.8 100.9 63.2 62.8 - -
55 Kyrgyzstan
Osh, Kyrgyzstan
60.9 179.5 142.6 87.9 37.9 18.4 16.5 24.5 25.4 25.7 49 68.9 108.7 - - - -
56 India
Kutail, India
59.9 75.3 85.7 65.7 48 36 42.5 42.1 33.2 26.6 72.1 111.3 84.9 61.9 80.4 - -
57 India
Narnaul, India
59.7 102.3 73 65.6 65.4 46.7 40.9 38 35.9 32.6 43.6 107.2 94.7 49.2 - - -
58 India
Asansol, India
59.7 117.6 75.6 81.3 56.6 36.8 29.4 24.9 32.5 25.8 57.6 79.9 89.1 55.3 50.9 64.4 -
59 Tajikistan
Dushanbe, Tajikistan
59.5 82.1 48 36.9 31.3 41.2 45 64.8 53.6 88.1 70 96.5 62.1 30.9 - - -
60 India
Kolkata, India
59 124.3 103.6 72.8 44.2 28.4 29.7 24 27.6 19.6 49.8 81.6 104.7 46.6 59.8 85.4 76.7
61 Tajikistan
Khujand, Tajikistan
59 45 52.4 53 39.1 32 26.5 34.8 33.4 37.9 63.3 127.3 145.1 - - - -
62 India
Fatehgarh Sahib, India
58.4 66.6 70.3 60.1 58.4 50.2 42.5 33.2 45.5 28.2 64.5 96.7 98.1 64.8 44.4 - -
63 India
Jalandhar, India
58.3 55.9 54.4 49.1 40 52.4 43.3 40.7 39.4 36.5 71.1 126.2 87.8 52.2 41 56.4 -
64 India
Hapur, India
58.2 40.3 48.3 41.3 28.4 16.2 16.2 12.6 38 24.4 85.3 163.2 153.4 44.2 - - -
65 India
Hajipur, India
58.1 83.6 81.9 91.4 86.7 38.2 32.4 26.8 25.1 23.4 41.4 92.1 80.8 54 - - -
66 India
Howrah, India
58 128.9 118.7 76.8 43.3 22.6 23 21.2 24.8 19.6 43.3 84.4 120.8 53.7 55.9 64.2 -
67 India
Kaithal, India
57.8 72.9 59 33.8 31.4 37.9 40.7 38.3 34.9 24.5 61.2 139.4 109.3 54.3 50 - -
68 India
Sirsa, India
57.8 59.5 64.9 53.6 45.5 51.8 60.4 40 35.4 18.2 50.6 120.2 81.8 47.2 73.7 - -
69 India
Kota, India
57 82.5 66.4 66.6 59.8 43.3 37.5 28.7 35.5 28.1 49.5 101 93.2 42.1 49.1 52.7 -
70 India
Jaipur, India
56.6 69.6 61.1 62 63.6 42.9 47.6 36 34.7 22.6 53.8 103 83.4 43.8 50.5 67.6 88.3
71 India
Navi Mumbai, India
56 134.3 81.8 80.3 50.3 31.6 21.5 16.2 19.8 19.1 45.1 71.9 91.8 52.6 61.6 - -
72 India
Pali, India
55.9 64.3 65.3 79.6 73 50.7 54.2 39 36.1 35.4 43.4 68.1 61.5 46.4 54.6 82.3 -
73 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
74 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
75 India
Gourela, India
55.4 88.3 68.9 61.7 49.7 41.1 37 36.6 42.7 32.1 48.2 84.3 76.1 39.3 43.4 - -
76 India
Ahmedabad, India
55.1 76.5 79.3 85.6 71 43.2 41.2 33.5 34.1 25.3 49 63.4 60.6 49 59 76.1 -
77 India
Amritsar, India
55 53.2 64 45.8 44.5 47.5 42.6 39.6 43.2 47.2 71.4 91.1 77.1 47.1 47.2 60.6 -
78 India
Patiala, India
54 64.5 52.7 45 45.2 44.7 38.6 31.1 30.4 26.9 62.5 107.9 86.8 41.1 35.2 44.1 -
79 Oman
Muscat, Oman
53.9 27.1 37.1 60.7 52.1 42.1 96.8 105.3 78.7 52.7 39.4 40.8 26 - - - -
80 India
Bhiwani, India
53.8 39.8 31 24.6 22.3 22.7 25.5 37.2 35.2 33.2 65.9 144 110 39 61.6 - -
81 India
Guwahati, India
53.1 125.1 148.9 105.3 54.6 25.4 18.1 14.5 18.4 21.1 38.6 70 96.6 62.1 - - -
82 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
83 India
Katni, India
52.2 110.6 69 52.6 55.3 24.5 28.3 20.7 25.6 18.7 47.9 111 95 57.6 - - -
84 Thailand
Lampang, Thailand
52.2 113.7 131.7 149.5 101 13.3 6 6.4 7.9 7.3 13.2 22.7 45.9 31.6 33.1 23.3 19.5
85 India
Gwalior, India
52 123.2 80.5 53.9 42.9 26 25.5 19.8 21.5 19.9 42.9 102.8 108.5 61.1 - - -
86 Nigeria
Port Harcourt, Nigeria
51.6 38.5 67.1 54.7 42.7 33.2 38.7 41 66.4 46.3 58.5 49.6 78.1 - - - -
87 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
88 Pakistan
Rawalpindi, Pakistan
51.4 104.6 91.4 37.7 20.9 22.5 26.1 31.1 37.7 37.4 33.1 73.3 91.7 42.4 40.8 - -
89 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
90 India
Mandikhera, India
50.9 72.7 76.4 49.7 49.6 30.3 40.8 27.2 30.1 23.3 53.1 103.4 61.5 51.7 - - -
91 Nepal
Kathmandu, Nepal
50.9 103.5 79.1 108.6 89.1 30.2 22.1 15.6 14.7 18.2 26.1 46.6 59.8 39.2 48 54.4 45.9
92 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
93 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
94 Bahrain
Manama, Bahrain
49.8 47.2 34.8 43 86.5 45 64.9 50.4 54.9 45.9 42.5 46.6 35.6 39.7 46.8 59.8 62.5
95 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
96 Russia
Krasnoyarsk, Russia
49.8 52.4 68.9 18.2 21.1 36.7 32.7 42.8 148.4 45.3 48.3 29.4 53.2 14.7 17.7 23.1 16.4
97 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
98 India
Khanna, India
49.7 52.9 50.6 51.2 36.7 42.4 36.2 27.3 27.3 28.1 64 93.9 81.1 42.6 36.1 41.6 -
99 Iraq
Baghdad, Iraq
49.7 59.8 53.6 35.5 38 51.1 38.9 41.4 51.2 53 55.8 58.4 62.8 - 39.6 - -
100 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

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