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 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
2 Serbia
Novi Pazar, Serbia
46.6 99 82.6 54.4 35 13.8 18.2 16.3 12.9 12.7 45.9 75 88 - - - -
3 Bosnia Herzegovina
Foca, Bosnia Herzegovina
46 - - 60.2 53.6 41.2 44 41.1 34.3 37 48.8 56.6 51.5 - - - -
4 Bosnia Herzegovina
Laktasi, Bosnia Herzegovina
42.8 72.8 66.7 47.2 37.3 17.1 22.4 - 15.3 21.2 50.1 57.3 53.4 - - - -
5 Bosnia Herzegovina
Prijedor, Bosnia Herzegovina
42.2 77.2 93.8 53.7 43.8 17 21.5 21.8 17.1 26.8 61.2 67.7 67.1 - - - -
6 Italy
Polistena, Italy
41.5 16.9 21.4 17.4 9.7 296.6 16.3 10.7 42 11.8 9.3 13.2 17.7 - - - -
7 Serbia
Cacak, Serbia
41.5 99.9 77.4 55.7 29 7.8 14.3 17 11.4 13.3 40.3 65.7 68.8 30.3 - - -
8 Bosnia Herzegovina
Mala Kladusa, Bosnia Herzegovina
38.7 - - 50.8 39.7 16.9 21.8 20.6 17.6 28.9 63.6 61.9 96.6 - - - -
9 Poland
Orzesze, Poland
38.2 92.5 60.9 60.7 38.6 17.2 12.1 11.2 10 17.1 24.1 60.2 72.9 44.1 - - -
10 Bosnia Herzegovina
Trn, Bosnia Herzegovina
37.2 66.9 59.5 46.8 35.2 14.1 19 19.8 16.1 23.7 51.7 56.3 59.7 - - - -
11 Bosnia Herzegovina
Doboj, Bosnia Herzegovina
37 66.6 71.5 66.6 35.9 16.7 23 24.6 20.5 28.2 32.9 56.2 54.9 37.6 - - -
12 Bosnia Herzegovina
Lukavac, Bosnia Herzegovina
37 53.7 68.7 39.8 25.7 15.5 24.1 23.6 20.1 20.2 15.5 47.5 62 37.7 39.9 55.6 -
13 Italy
Ceglie Messapica, Italy
36.6 18.8 23.9 143.3 14.5 36.6 17 15.4 54.5 36.5 14.3 21.7 14.7 31.7 30.7 16.2 15.7
14 Serbia
Kosjeric, Serbia
35.5 55.5 48.5 40.7 25.9 16 13 - 11.6 14.7 33.4 53.7 55.7 36.7 28.8 - -
15 Montenegro
Herceg-Novi, Montenegro
35.2 - - 19.4 16.2 9.9 15.2 15.9 22.1 17.9 72 36.8 125 - - - -
16 Bosnia Herzegovina
Gradiska, Bosnia Herzegovina
34.9 63.3 58.7 44.2 30.5 12.3 16.9 18 13.4 20.4 48.2 55.2 48.7 - - - -
17 Serbia
Valjevo, Serbia
34.7 68 60.7 43.9 29.1 8.7 14.3 15.4 10.3 14.2 37.8 55.4 60.9 41.5 37.9 - -
18 Bosnia Herzegovina
Lukavica, Bosnia Herzegovina
34.1 60 50.1 40.1 28 10.7 20.9 22.1 18.4 19.8 38.9 51.2 52.7 - - - -
19 Bosnia Herzegovina
Zivinice, Bosnia Herzegovina
33.4 64.7 73.6 28.2 34.4 9.3 11.7 7.3 - 15.8 43.1 55.9 63.7 34.6 - - -
20 Bosnia Herzegovina
Tuzla, Bosnia Herzegovina
33.2 62 50.8 35.9 22.9 11.4 16.5 16.4 11.2 14.6 40.2 49.1 71.5 32.1 35.3 43.1 -
21 Bosnia Herzegovina
Bihac, Bosnia Herzegovina
33 53.7 23.8 43.8 31.8 14.8 23.9 21.7 20.6 29.1 61.2 42.8 46.4 - - - -
22 Bosnia Herzegovina
Prnjavor, Bosnia Herzegovina
33 70.3 54.7 49.2 34.5 10.7 16.8 18.6 12.8 21 54.1 107.9 1.8 - - - -
23 Serbia
Gornji Milanovac, Serbia
32.5 61.9 57.9 57.7 30 7.1 12.5 14.4 10.3 11.8 35.6 51.8 52.1 - - - -
24 Serbia
Uzice, Serbia
32.1 46.7 43.2 40.4 24.3 8.1 12.8 13.4 7.6 - 35.7 62.6 57.3 31.7 - - -
25 Bosnia Herzegovina
Sokolac, Bosnia Herzegovina
31.9 - 60.6 51 39.5 13.1 21.5 23 18 25.8 41.7 41.7 48.3 - - - -
26 Poland
Ksawerow, Poland
31.9 51.1 53.4 42.4 30.3 14.3 19.9 19.7 16.8 22.8 33.4 37.9 42.6 28.7 28.7 - -
27 Poland
Goczalkowice Zdroj, Poland
31.9 46.3 75.9 46.3 28.5 13.3 17 15 10.4 16.5 30.8 33.4 52.1 31.6 29.6 - -
28 Serbia
Lipe, Serbia
30.7 47.4 61.6 46.5 28.7 8.6 15.3 16.5 14.6 17.2 33.9 48.5 47.3 26.4 - - -
29 Romania
Ojdula, Romania
30.3 48.6 49.5 41.4 30.2 13.9 16.9 16.4 15.3 19.1 33.4 40.4 40.6 - - - -
30 Bosnia Herzegovina
Jajce, Bosnia Herzegovina
29.7 44.6 44.5 38.5 26.4 12.6 19.9 20.9 16.9 24.1 33.3 36.4 40.9 - - - -
31 Bosnia Herzegovina
Sarajevo, Bosnia Herzegovina
29.7 45.4 37.4 26.8 17.2 7.9 18 21.1 15.1 19.3 40.2 56.3 51.8 42.5 34.1 38.4 -
32 Kosovo
Vushtrri, Kosovo
29.4 48.1 51 32.5 21.8 10.9 14.2 20.4 18.4 14.5 36.6 48.2 38.2 34.3 - - -
33 Bosnia Herzegovina
Bosanska Krupa, Bosnia Herzegovina
29.3 - 38.5 46.4 33.8 12.9 15.8 15.2 11.4 18.6 38.4 48 54.9 - - - -
34 Serbia
Nis, Serbia
29 54.4 64.9 44.9 24.8 8.5 12.4 13.2 9.7 11.2 25 38.3 43.1 32 32.4 - -
35 Czech Republic
Kamenice, Czech Republic
28.2 - - 6.3 30.5 14 21.8 15.4 14.4 26 40 48.2 46.2 - - - -
36 Serbia
Smederevo, Serbia
28.2 36.6 67.6 42.6 20.5 7.4 10.3 10.2 9.6 11.7 26.4 35.5 40.1 28.3 24.5 - -
37 Bosnia Herzegovina
Odzak, Bosnia Herzegovina
28.1 40.9 48.8 34.4 23.7 10 15 18.2 12.7 18.9 37.4 44.6 39.2 - - - -
38 North Macedonia
Skopje, North Macedonia
27.7 41.3 53 29.1 20.4 12.6 18.1 18 16.2 17.8 27 37.5 43.2 30.6 32.4 - -
39 Poland
Raciborz, Poland
27.4 46.1 55.9 37.8 23.8 11.3 16 13.1 10.1 17.1 25.2 29.3 44.8 24.9 24.5 - -
40 Italy
Gaggiano, Italy
27.3 47.1 39.8 32.6 23.1 11 16.5 14.3 11.7 24 35 27.7 45.2 32.7 - - -
41 North Macedonia
Gjorce Petro, North Macedonia
27 52.1 53.6 32.7 16.7 6.7 14.2 15.7 13.7 16.1 25.2 39.3 41.5 - - - -
42 Czech Republic
Rajec-Jestrebi, Czech Republic
26.7 33.1 72.8 44.8 21.9 9 13.2 11.1 8 14.9 31.2 43.3 43.4 - - - -
43 North Macedonia
Tetovo, North Macedonia
26.6 32.3 44.7 28.9 22.7 13.1 17.3 16.7 16 18.8 33.9 64 50.5 24.5 - - -
44 Bosnia Herzegovina
Banja Luka, Bosnia Herzegovina
26.4 26 - 30.3 22.2 11 16.9 18.9 14.5 18.7 35 44.2 53.3 25 - - -
45 Hungary
Szeged, Hungary
26.4 63.1 196.3 12.6 14.1 9.3 13.4 14.3 10.6 12.6 18 20.3 16.3 16.2 15.7 17.3 -
46 Poland
Klodzko, Poland
26.4 43.3 55.9 45.8 21.7 10.1 14 10.9 8.2 13.7 23.3 24.5 51.5 14.4 - - -
47 Poland
Bielsko-Biala, Poland
26.4 40.3 54 35.7 23.8 12.4 15.9 14.2 10.2 15.6 20.4 26.2 49.4 24.7 27 - -
48 Bosnia Herzegovina
Mejdan - Obilicevo, Bosnia Herzegovina
26.2 53.1 54.8 33.4 26.1 9.6 15.5 17.3 15.8 22.5 21.2 27.6 - - - - -
49 Poland
Gliwice, Poland
25.9 43.1 48.4 36.4 21.8 14 16.6 15.7 12.9 16.7 22.7 26.5 37.9 22.1 - - -
50 Romania
Otopeni, Romania
25.8 43.7 39.3 33.4 25.7 12.8 13.4 17.1 16.7 14.7 27.9 35.5 28.8 - - - -

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