2017-2023

World's most polluted cities

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

2023

World Air Quality Report

NEWSROOM
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PM2.5 legend

0-5

Meets WHO guideline

5.1-10

Exceeds by 1 to 2 times

10.1-15

Exceeds by 2 to 3 times

15.1-25

Exceeds by 3 to 5 times

25.1-35

Exceeds by 5 to 7 times

35.1-50

Exceeds by 7 to 10 times

>50.1

Exceeds by over 10 times

Rank
City
2023 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2022 2021 2020 2019 2018 2017
1 USA
Elwood, USA
15.6 18.6 13.5 14.3 11.5 12.1 32.2 16.2 17.4 12.7 7.6 -- -- 14 14.9 -- -- -- --
2 USA
McCook, USA
15.2 14.5 12.1 12.1 12.8 14 37.1 19.9 12.1 10.9 9.6 11.2 11.6 48.6 -- -- -- -- --
3 USA
Peotone, USA
15.1 19.7 12.8 14 11.8 12.6 33.1 17.4 16.4 12.9 7.5 10.1 10.3 14.9 16.7 -- -- -- --
4 USA
Woodstock, USA
15.1 18.4 11.7 13.4 10.3 10.6 34.1 16.4 17.1 1.8 2.4 3.7 2.3 13.7 -- -- -- -- --
5 USA
Homer, USA
14.9 -- -- 14.1 10.4 11.7 35.3 17.4 18.7 14.3 7.8 10.5 10 -- -- -- -- -- --
6 USA
Harvard, USA
14.7 19.5 12.2 13.7 10.7 10 37.4 16.4 17.3 12 7.1 9.7 11 21.4 -- -- -- -- --
7 USA
Lemont, USA
14.7 13.4 11.3 12.1 11.7 13.1 33.2 17.7 14.8 11.6 10.5 11.7 11.3 45.7 -- -- -- -- --
8 USA
Willowbrook, USA
14.7 17.9 13.1 13.6 12.2 13.4 32.5 17.1 17.1 12.7 7.6 10.2 9.1 12.7 13.5 -- -- -- --
9 USA
Inverness, USA
13.9 -- -- -- 8.4 7.9 36.4 18.1 16.6 10.7 7.3 7.6 7.7 -- -- -- -- -- --
10 USA
Wheaton, USA
13.7 16.4 8.5 4.9 10 11 31.5 16.9 17.2 12.5 7.4 9.4 7.6 9.5 13.4 -- 11.9 -- --
11 USA
Wilmette, USA
13.7 -- -- -- 6.8 9.4 31.6 20.6 16.4 10.7 8.2 8.8 8.5 7.6 -- -- -- -- --
12 USA
Washington Park, USA
13.5 13.5 12.6 11.3 11.1 12.2 20.9 14.1 13 13.6 12.3 12.3 11.3 47.5 -- -- -- -- --
13 USA
Orland Park, USA
13.4 18.3 11.6 12.4 9.7 10.9 32.2 15.4 15.7 11 6.5 9.1 8.7 12.1 -- -- -- -- --
14 USA
Streamwood, USA
13.4 12.8 9.8 8 10.2 9.7 31.9 17.7 14.5 10.8 9 10.1 9.8 43.2 -- -- -- -- --
15 USA
Union Hill, USA
13.4 18.6 12.3 13 10.3 10.7 31.8 11.7 14.1 11.6 6.5 7.7 7.9 8.3 6.5 -- -- -- --
16 USA
Naperville, USA
13.2 14.6 10.9 11.5 9.9 10.8 31.8 15.9 14.8 11.2 7.9 9.8 9 10.6 10.4 9.5 10.9 10.6 --
17 USA
Peoria, USA
13.1 16 11.3 13.2 9.7 11.3 28.3 21.3 15.4 11.2 8 9.1 8.2 11.2 11.2 8.2 8.6 9.6 9.9
18 USA
Saint Louis, USA
13.1 15.1 11.4 12.2 9.8 13 25.5 14.8 15.1 15.2 8.3 8.6 7.2 12.8 -- -- -- -- --
19 USA
Chicago, USA
13 14.6 9.4 10.1 9 9.8 28.4 17.4 16.8 12.6 7.9 9.9 9.8 11.8 13.4 11.1 12.8 9.4 6.7
20 USA
Newark, USA
13 15.6 11.9 12 10.5 11.3 32.1 14.5 15.6 11.1 6.8 7.9 7.8 11.6 12.4 -- -- -- --
21 USA
Saint Charles, USA
12.9 11.9 9.4 10.1 11 10.3 32.6 16.5 12.7 9.9 8.5 9.8 8.8 41.2 -- -- -- -- --
22 USA
DeKalb, USA
12.8 15.2 10.3 11.6 9.7 10 31.9 14.2 16.1 11.9 6.9 8.2 7.4 10.7 12.3 -- -- -- --
23 USA
Shorewood, USA
12.7 11.3 9 9.3 10.5 10 32 15.8 14.2 9.5 9 9.2 8.7 39.6 -- -- -- -- --
24 USA
Skokie, USA
12.6 14 10.6 10.4 9.2 10 25.7 17.1 17.2 12.9 7.9 8.8 8 10.6 13.6 11.2 10.5 -- --
25 USA
Joliet, USA
12.4 13.8 9.9 10.7 9.1 9.9 30.7 15.2 14.6 10 7.6 9 8 10.5 12 9.8 10.3 9.9 --
26 USA
Lansing, USA
12.3 12.6 9.8 9.8 9.5 10.8 28.4 15.9 13.8 9.9 9.3 9.1 8.6 9.9 10.8 -- -- -- --
27 USA
West Ridge, USA
12.3 14.8 10.5 10.7 9.2 10.7 26.9 15.8 14.7 11.2 6.8 8 6.7 10.2 -- -- -- -- --
28 USA
Lake Forest, USA
12.2 15.7 10.9 10.5 9.1 9.9 28 14.7 14.9 10.7 6.8 7.8 8.6 10.6 12.2 -- -- -- --
29 USA
Marengo, USA
12.2 15.1 9.2 11.1 9.3 10.1 31.2 14 15.1 10.8 5.9 7 7.9 10.7 11.4 -- -- -- --
30 USA
Rockford, USA
12.2 11.1 7.4 8.3 9.5 9.7 34.3 14.6 14.5 10.7 7.9 9.8 9.1 11 9.8 9.4 -- -- --
31 USA
Bellevue, USA
12.1 9.5 8.5 -- 9.2 10.6 34.5 14.1 13.1 9.2 7.7 8.6 7.9 32.7 -- -- -- -- --
32 USA
Granite City, USA
12 13.7 10.9 11.3 9.5 11.6 21.2 12.9 12.5 13.3 9.3 9.6 8.4 11.6 13.7 10.1 11.8 11.2 10.1
33 USA
Charleston, USA
11.8 14.3 9.4 11.2 8.1 10.1 26.5 13.8 13.8 12.3 6.7 8 7.5 11.4 12.4 -- -- -- --
34 USA
La Salle, USA
11.7 12.2 8.3 10.7 8.6 9.7 31.5 13.7 16.2 10.8 5.7 5.9 6.1 9.3 -- -- -- -- --
35 USA
Milan, USA
11.7 12.3 8.4 9.3 9.1 9.3 29 13.6 12.2 9.6 7.6 8.2 7.2 37.1 -- -- -- -- --
36 USA
East Saint Louis, USA
11.6 11.2 9.8 10.3 9 10.9 20.9 12.9 12.2 13 10.6 10.8 8.4 -- -- -- -- -- --
37 USA
Lebanon, USA
11.6 12.6 9.7 11.2 8.9 10.1 23.4 13.8 15.2 12.9 7.6 8.3 7.3 12 -- -- -- -- --
38 USA
Highland, USA
11.5 12 8.6 11 8.4 10.8 21.6 15.1 14.5 13.4 7.7 8.5 7.3 10.9 15.3 -- -- -- --
39 USA
Normal, USA
11.5 12.2 9.2 9.8 8.4 9.6 30.2 14.2 13 9.6 8.3 7.3 6.6 9.8 10.7 8.7 10.1 9.8 9.6
40 USA
Cicero, USA
11.4 10.1 8.8 8.1 7.6 9.6 24.1 14.1 14.3 11.8 7.9 10.7 9.8 8.6 8.7 8 11.3 9.6 9.3
41 USA
Danvers, USA
11.4 10.8 8.4 8.3 9.1 8.7 29.9 13.4 11.7 9.5 8.3 7.4 7 38.6 -- -- -- -- --
42 USA
Evanston, USA
11.4 17.1 9.7 9.1 7.7 3.3 23.7 11 17.3 12.4 8.2 10.3 10.2 9.8 11.6 -- -- -- --
43 USA
Schiller Park, USA
11.4 12.1 9.3 8.6 8 8.4 24.5 15.9 14.1 10.3 7.7 9.1 8.9 11.7 -- -- -- -- --
44 USA
Leland Grove, USA
11.3 9.5 7.1 11.6 7.4 10.5 27.9 13.5 13.7 11.3 5.9 6.1 5.3 9.4 -- -- -- -- --
45 USA
Rock Island Arsenal, USA
11.2 11.9 8.2 9.4 8.3 9.2 29.8 13.5 12.1 9.5 7.5 8.1 6.9 8.8 -- -- -- -- --
46 USA
Des Plaines, USA
11.1 11.4 7.9 7.8 7.9 8.3 29 14.7 12.3 9.4 8.2 8.2 7.9 8.7 10 8.6 -- -- --
47 USA
Park City, USA
11.1 10.5 8.1 7.6 9.2 8.3 28.7 13.3 11.8 8.2 7.4 8.5 7.7 37.3 -- -- -- -- --
48 USA
Champaign, USA
10.9 10.1 7.1 8.9 6.4 6.9 27.4 13 15.4 11.4 6.9 9.5 8.5 8.7 10.5 9.4 9.9 8.6 9.1
49 USA
New Berlin, USA
10.9 9.5 7.6 7.8 9.4 9.2 24.8 12.9 12 11 7.5 8 7.3 36.8 -- -- -- -- --
50 USA
Saint Jacob, USA
10.9 11.9 7.7 10.3 8.9 11 21.9 13 13 12.1 6.5 6.2 4.8 12.2 12 -- -- -- --

1-50 of 62

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