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 Hungary
Sajoszentpeter, Hungary
25.7 43.9 47.9 31.5 16.8 7.4 9.9 11.4 8.2 12.7 28.5 45.7 46.7 21.7 - - -
52 Italy
Gossolengo, Italy
25.7 48.4 36.5 29.8 21.1 11.2 14.4 14.1 11.4 20 30.3 27.9 45.7 - - - -
53 Croatia
Zagreb, Croatia
25.6 36 39.1 28.6 19.2 8 14.3 13.3 8.5 17.1 36.2 45.1 43.2 - - - -
54 Poland
Domaszowice, Poland
25.6 46 49.5 32.8 21.1 12.9 13.9 16.2 12.6 14.5 24 29.4 36.3 21.1 21.1 - -
55 Italy
Gallo-Tre Re-Mezzana Corti, Italy
25.1 50.4 41.6 28.8 17.7 8 12.5 11.5 9.8 21.3 35.3 27.3 57.1 28.5 19.1 - -
56 North Macedonia
Kicevo, North Macedonia
25 - - 26.3 21.6 8.2 11.8 11.5 11.6 11.9 35.5 59.2 76 - - - -
57 Serbia
Kragujevac, Serbia
25 40 45.5 37.4 20.3 5.9 11.7 13.9 10.1 10.8 25.1 39.6 41.2 29.8 24.7 - -
58 Poland
Krakow, Poland
24.7 36.2 52 32 20.6 11.3 13.8 13.6 9.6 15.5 24.7 28.4 40.4 21.7 24.6 28.9 30.2
59 Poland
Naklo nad Notecia, Poland
24.4 40.2 63.3 31.4 18.7 9.9 11.3 11.9 7.1 12 26.7 28.8 41.5 - - - -
60 Greece
Orestiada, Greece
24.2 29.6 36.2 30.9 22.3 7.4 9.6 - - 9.3 20.8 32.9 24.8 - - - -
61 Serbia
Novi Sad, Serbia
24 23.8 40.2 32.7 20.6 7.9 13.8 14.4 9.7 15.9 28.3 41.6 40.9 22.2 26.9 - -
62 Poland
Kalisz, Poland
23.9 36 45.4 28.3 18.9 9.4 14.5 15 11.3 15.8 22 28.9 43.2 18.8 19.4 23.3 26.1
63 Poland
Lask, Poland
23.9 39.8 47.5 38.2 21.7 9.8 13.5 12.5 9.3 13.8 22.4 24.5 36 - - - -
64 Poland
Sroda Slaska, Poland
23.9 41.9 51.5 37.3 20.7 9.8 14.6 11.3 8.1 12.9 16.9 28.2 35.6 19 - - -
65 Poland
Mielec, Poland
23.9 31.6 45.7 32.3 18.2 14.8 19.8 18.1 14.7 18 21.2 22.6 30.7 18.8 21.1 25.1 25.3
66 Bosnia Herzegovina
Drinic, Bosnia Herzegovina
23.8 - - 39.8 27.9 10.1 17.8 16.1 13.3 20.9 32.6 29.2 33.8 - - - -
67 Italy
Veggia-Villalunga, Italy
23.7 43 34.7 28.5 21.6 10.1 13.9 13.9 9.3 17.7 28.7 29.2 35.1 - - - -
68 Poland
Radomsko, Poland
23.7 31 41.6 35.6 22.5 11.2 17.7 15.9 12.7 16.4 21.8 22.3 36.9 20.8 - - -
69 Slovakia
Jelsava, Slovakia
23.7 45.1 44 25.3 15.2 8.9 13 14 8.1 11.2 21.8 37.6 41.9 19 21.4 24.3 26.7
70 Italy
Soresina, Italy
23.5 40.6 38.3 32.6 19.2 10.4 15 11.9 11.2 20.4 28.2 22.4 40.4 - - - -
71 Hungary
Miskolc, Hungary
23.4 37.8 42 27.9 16.3 9 12.3 14.7 9.8 13.6 25.2 37.7 35.4 21 21.9 24.4 -
72 Italy
Cremona, Italy
23.4 42.4 38 30.7 18.6 9 14.9 13 13.1 21.7 27.1 20 39.2 - - - -
73 Serbia
Belgrade, Serbia
23.4 27.5 46.3 33.5 19.5 6.9 13 15.3 12.1 15.9 27.7 31.9 33.1 24.3 23.3 23.9 24.5
74 Greece
Vasilika, Greece
23.2 26.8 34.6 28.9 23.7 10.2 15.9 18.5 16.9 15.7 22.3 33 33.2 - - - -
75 Italy
Modena, Italy
23.2 44.1 37.2 25.3 16.6 7.7 12.7 12.7 8.5 18.4 27.5 27.6 40.4 24.3 23.4 25.2 22.1
76 Poland
Lublin, Poland
23.1 37.3 43 30.5 18.2 11.7 14.9 15.4 12.6 15.8 23.7 27.4 28.6 18.5 20.5 21 21.6
77 Ukraine
Borova, Ukraine
23.1 33.7 40.6 28.6 27.2 12.5 13.9 20 15.7 16.4 27.8 26.3 21.4 18.7 - - -
78 Croatia
Slavonski Brod, Croatia
23 37.3 44.6 27.2 15.8 9.3 14 14.4 9 12.6 28.9 33.5 31.5 21.4 22.1 26 36.9
79 Czech Republic
Novy Knin, Czech Republic
23 31.8 41.2 27.5 23.8 11.8 18.7 12.6 10.7 18.7 27.6 31.3 27.3 - - - -
80 Greece
Anatoli, Greece
22.9 30.7 40.5 30.2 20.1 8.5 14.3 18.2 20 - - - - 25.5 - - -
81 Greece
Ioannina, Greece
22.9 34.5 39.2 30.4 19.1 8 13.4 16.9 18.9 15.2 20.2 29.8 33.7 - - - -
82 Italy
Milano, Italy
22.9 34.3 36.4 28.8 18.9 9.4 15.2 12.7 10.9 16.6 25.5 19.7 45.9 28.4 23.3 22.1 27.8
83 Czech Republic
Dolni Lutyne, Czech Republic
22.8 36.8 50.3 30.6 18.1 9.6 13.9 13.4 8.3 12.4 23.1 22.9 36.6 20.9 27.7 35.8 32.3
84 North Macedonia
Kumanovo, North Macedonia
22.8 33.3 47.1 23.3 24.7 13.4 17.3 18.5 14.1 16.9 31.8 38.3 25.4 22.9 - - -
85 Hungary
Kazincbarcika, Hungary
22.7 39.6 41.1 27.1 14.8 6.3 9 10.2 7.2 11.1 25.1 39.7 39.7 18.5 - - -
86 Poland
Sierpc, Poland
22.7 36.5 54.2 30.9 18.6 10.8 12.3 13 10 13.8 22.3 26.4 31.4 - - - -
87 Italy
Besate, Italy
22.6 39.1 34.6 26.3 18.6 8.7 13.7 10.9 8.7 19.3 28 22.1 39.3 25.9 24.1 - -
88 Greece
Xanthi, Greece
22.5 31.7 34.2 30.7 25.7 10.4 13.5 16.2 15.9 13.1 21.4 30.7 28.6 21.6 - - -
89 Greece
Meligalas, Greece
22.5 42.3 38.2 26.7 18.9 5.3 11.4 14.7 24 13.3 11.7 36.7 28.5 - - - -
90 Poland
Katowice, Poland
22.5 39.4 43.6 31.4 20 11 13.6 12.3 10.2 14.1 19.3 22.4 32.7 21.4 26 30.4 25.1
91 Poland
Fordon, Poland
22.4 - 31.4 29.9 23.2 13.7 16.1 17.8 10.4 16.2 27.3 32.5 36.7 - - - -
92 Serbia
Paracin, Serbia
22.4 26.7 32.8 27.4 19.7 11.4 15.2 18.7 13.6 - 29.1 27.2 26 16.5 9.2 - -
93 Italy
Pavia, Italy
22.3 36.8 35.5 26.9 17.3 9.5 11 10.4 8.9 20 28.2 23.9 39.9 - - - -
94 Italy
Carde, Italy
22.3 28.6 25.2 27.6 16.1 12.2 19.7 15.7 15.2 35.1 30.2 15 31.8 - - - -
95 Poland
Kielce, Poland
22.3 36.6 54.9 29.4 18.1 10.4 13 12.4 10 13.1 20.9 20.3 30.2 16.5 20.1 - -
96 Romania
Targu-Mures, Romania
22.3 33.7 32.1 28.5 17.7 9.8 13.7 12.3 12.4 14.9 28.1 35 30.2 15.1 - - -
97 Serbia
Obrenovac, Serbia
22.3 16.7 46.7 34.9 19.4 6 10.6 13.8 10.8 14.6 27.3 33.3 36.1 8.4 9.7 - -
98 Czech Republic
Frydlant, Czech Republic
22.2 31.4 31.6 25.5 22.5 13.1 19.1 13.6 10.9 18.5 23 31.7 27 19.3 19.1 - -
99 Italy
Esine, Italy
22.2 37.1 34.2 29.9 22.7 9.2 14 10.8 10 16.3 20.3 25 38 23.1 21.8 - -
100 Greece
Kardia, Greece
22.1 22.7 30.2 25.6 22 10.9 17.1 20 18 17.8 24.2 34.9 25.2 22.3 22 - -

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