World's most polluted cities 2020 (PM2.5)

The most polluted cities according to data aggregated from over 80,000 data points.

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2020

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2020 World air quality report

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PM2.5 Legend grey informational icon
WHO target Good Moderate Unhealthy for sensitive groups Unhealthy Very unhealthy Hazardous
Unit: µg/m³
Rank City 2020 AVG JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 AVG 2018 AVG 2017 AVG
1 Czech Republic
Dolni Lutyne, Czech Republic
20.9 30.6 14.9 32.3 28.1 15.1 11.2 11.5 13 14.3 14.6 28.2 35.5 27.7 35.8 32.3
2 Czech Republic
Frydlant, Czech Republic
19.3 30.3 15.1 24.8 22.7 14.8 12.6 9.5 14.1 14 17.7 28.6 26.6 19.1 - -
3 Czech Republic
Karvina, Czech Republic
18.3 28.2 11.8 22.2 20.9 13 12 13.4 14.8 14.6 14.1 23.9 29.6 22.1 27.1 24.6
4 Czech Republic
Havirov, Czech Republic
18 30.4 12.3 23.4 21.3 12.7 12.3 12.2 14.1 13.5 12.9 22.9 27.2 20.3 28.8 26.7
5 Czech Republic
Tesin, Czech Republic
17.9 29.6 10.9 23.6 21.5 12.9 11.8 12.3 14.3 14.4 12.6 21.8 28.8 20 29.6 27.2
6 Czech Republic
Ostrava, Czech Republic
16.8 25 10.6 22 19.6 12.2 11.7 11.2 13.8 14.9 13.4 21 26.4 20.9 30.1 27.8
7 Czech Republic
Decin, Czech Republic
16.4 26.4 11.7 22.5 23 11.9 9.9 9.5 12.2 14 15.5 22.2 18.4 17.8 23.1 23
8 Czech Republic
Frydek-Mistek, Czech Republic
16.2 27.3 9.4 19.8 18.2 11.7 11 10.5 13.6 12.4 12.8 20.8 26.4 17.6 26.9 25
9 Czech Republic
Studenka, Czech Republic
16.2 28.4 10.7 22.3 19.9 11 9.7 9.8 13.6 11.9 12.1 21.6 22.9 18 25.4 24.3
10 Czech Republic
Moravska Trebova, Czech Republic
16.2 31.6 11.2 21 22.3 11.9 9.2 9.5 11.8 11.9 12.4 24 17.5 18.9 23 18.9
11 Czech Republic
Olomouc, Czech Republic
15.8 29 10.5 18.4 17.5 10.3 9.7 10.8 14.2 13.4 13.8 24.1 17.8 16.1 19 20.4
12 Czech Republic
Prerov, Czech Republic
15.5 30.3 10.9 20 17.9 10.1 9.3 9.7 12.7 12 12.7 21.9 18.3 17.9 22.9 24.4
13 Czech Republic
Uherske Hradiste, Czech Republic
15.3 30.6 11.3 18.9 17.7 10.4 10.5 12.3 13.1 12.3 12.2 22 16.6 - - -
14 Czech Republic
Trinec, Czech Republic
15.1 23.2 9.2 19.1 16.5 11.1 11.3 10.8 11.9 10.8 13.2 20.6 23.5 18.2 26.5 26.7
15 Czech Republic
Valasske Mezirici, Czech Republic
15 28.3 10.2 21.1 17.9 10.1 9.9 9.2 11.8 10.6 11.7 20.9 18 17.2 24.8 24.9
16 Czech Republic
Opava, Czech Republic
14.9 20.9 8.7 19.6 18.9 11.3 10.4 9.8 13.8 13 11.6 18.2 22.4 16.9 24.5 22.7
17 Czech Republic
Marianske Radcice, Czech Republic
14.9 24.9 9.5 14.7 19.2 9.9 11.5 11.4 15.8 13.5 11.6 17.5 19.6 15.5 20.5 18.7
18 Czech Republic
Beroun, Czech Republic
14 27.3 7.9 15.9 18.2 9.7 9.8 9.3 11.8 12.1 12 18.7 19 15.6 22.5 18.8
19 Czech Republic
Most, Czech Republic
13.8 23.8 8.4 14.7 17.8 9.5 10.8 10.3 13.3 12.1 11.8 15.4 17.7 15.1 21.7 18.3
20 Czech Republic
Hradec Kralove, Czech Republic
13.7 22.9 7.7 15.7 15.4 9.4 8.7 8.5 12.8 13.6 12.6 21.6 14.8 14.8 19.7 19
21 Czech Republic
Rozdalovice, Czech Republic
13.6 24.8 10 16.9 16.6 9.4 8.5 12.5 10.3 9.2 11.1 18.5 16.6 13 19.2 18.6
22 Czech Republic
Brno, Czech Republic
13.5 26.2 9.7 15.9 13.6 8 7.7 7.4 9.8 10 11.8 23.3 18.5 15.7 20.4 18.8
23 Czech Republic
Teplice, Czech Republic
13.4 25.8 9.4 15 14.7 8.3 8.7 8.6 11.3 11.2 12.7 17.3 17.1 14.2 19.1 18.8
24 Czech Republic
Mlada Boleslav, Czech Republic
13 24.7 8.2 17.4 17.3 9.8 8.3 8.6 9.7 10.4 10.2 15.7 14.4 15.6 19.1 15.9
25 Czech Republic
Zlin, Czech Republic
13 26.4 8.8 17.6 15.4 9 9.1 8.8 10.2 9.3 9.3 18.1 14 16.5 21.7 21.3
26 Czech Republic
Trutnov, Czech Republic
12.9 24.7 9.6 15.7 16.2 9.3 8.6 9.8 11.4 11 10.8 16.3 14 - - -
27 Czech Republic
Tabor, Czech Republic
12.7 26.5 10.5 16.7 15.8 8.9 6.9 8.2 8.7 9.6 12.2 18.4 14.5 - - -
28 Czech Republic
Prostejov, Czech Republic
12.5 26.3 9 14.7 13.8 8.4 7.6 9 10.4 10.3 10.4 18.9 14.8 - - -
29 Czech Republic
Pardubice, Czech Republic
12.5 22.3 6.8 15.4 16 9.1 8.3 8.9 10.5 10.8 10.2 17.9 13.5 14.7 19.4 18.3
30 Czech Republic
Litomerice, Czech Republic
12.4 25.9 8.5 14.5 15.1 8.5 8.7 8.9 11.1 10.9 10.7 16.3 14.4 - - -
31 Czech Republic
Kladno, Czech Republic
12.3 21.8 6.8 15.1 16.7 8.9 8.5 7.9 10.9 10.7 10.3 14.8 15.2 12.2 19 18
32 Czech Republic
Usti nad Labem, Czech Republic
12 22.2 8.1 13.9 12.8 7.4 7.8 7.3 9.6 9.4 11.8 16.2 16.9 14.1 18.3 17
33 Czech Republic
Jihlava, Czech Republic
12 19.3 7.9 13.7 15.5 9 7.9 9.5 11.7 11.3 9.9 15.5 13 13.3 16.9 14.2
34 Czech Republic
Kromeriz, Czech Republic
12 20.4 6.9 16.7 14.4 8.5 8.8 10.8 11.4 9.2 8.3 14.7 12.4 14.3 20.8 18.5
35 Czech Republic
Znojmo, Czech Republic
11.9 22.9 8.2 13.5 13.4 7.7 6.9 8 9.4 9.1 9.1 18.4 16.3 14.2 19.7 17.4
36 Czech Republic
Chomutov, Czech Republic
11.9 22.2 8.1 13.1 14 8.3 9 8.5 10.9 10.2 10.5 13.7 17.1 - - -
37 Czech Republic
Liberec, Czech Republic
11.6 17.2 6.6 14.7 14.4 9.1 8.6 8.2 11.1 10.4 9.7 15.1 14.1 12.5 18.4 15.8
38 Czech Republic
Kamenny Ujezd, Czech Republic
11.5 19.3 7.2 12.6 12.4 8 8.5 8 9.6 9.6 9.7 17 15.4 12 16.4 16.9
39 Czech Republic
Plzen, Czech Republic
11.5 21.9 6.4 13.4 14.5 7.9 7.5 6.5 9.5 9.1 10.2 16.6 14.9 12.6 - -
40 Czech Republic
Trebic, Czech Republic
11.5 20.9 8 13 14.2 8.1 6.8 8.6 9.9 10.2 11.6 17.5 12.1 - - -
41 Czech Republic
Kadan, Czech Republic
11.2 15.7 6.3 13.3 15.6 8.6 8.9 8.6 11.6 10.5 8.7 10.9 15.6 12.8 18.8 14.8
42 Czech Republic
Budejovice, Czech Republic
11 21.5 6.4 12.6 13 7.6 7.9 8.5 9.7 9.5 8.4 12.4 13.8 12.7 16.9 17.1
43 Czech Republic
Lipa, Czech Republic
11 19.7 6 13 14.9 7.9 8.2 8.1 10.6 10.4 9.3 13.6 12.9 - - -
44 Czech Republic
Prague, Czech Republic
10.9 17 5.3 12.7 14.5 7.5 7.7 8 10.8 10.7 8.9 14 13.5 11.5 17.4 15.6
45 Czech Republic
Sedlec, Czech Republic
10.3 17.9 6.4 12.7 11.5 8.1 7.1 7.5 9.5 9.1 7.7 14.8 11.7 12.6 18.6 16.2
46 Czech Republic
Cheb, Czech Republic
9.2 14.3 5.7 10.1 12.9 7.6 7.4 7.8 9.9 9.2 7 10 10.3 - - -
47 Czech Republic
Chystovice, Czech Republic
9.1 12.3 5.3 11.1 12.6 7 6.8 6.9 9.5 8.6 6.6 11.4 10.2 10.1 14.5 11.8
48 Czech Republic
Sokolov, Czech Republic
8.9 13.4 4.7 9.6 12.7 6.8 7.4 7.2 8.8 8.6 6.3 9.8 10.9 9.4 15.1 13.1
49 Czech Republic
Modrice, Czech Republic
8.9 28.3 7.3 11.3 8.5 4.3 5.3 3.1 4.8 4.3 6.8 15.1 7.1 11 - -
50 Czech Republic
Prachatice, Czech Republic
8.1 15.1 4.3 9.9 9.7 6 5.5 6 6.6 7.4 6.8 11.1 10.7 - - -

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