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
Coraopolis, USA
19.3 7.9 6.5 6.8 5.5 8.8 23.4 18.2 22.2 42.1 54.2 11.8 8.6 7.2 -- -- -- -- --
2 USA
Forest Park, USA
17.6 13.6 14.5 18.6 13.7 16 24.1 19.9 20.2 18.7 20.8 -- -- 15.5 16.8 -- -- -- --
3 USA
Cave Junction, USA
17.1 11 14.8 7.2 5.2 4.6 3 12.2 90.5 28.7 6.3 11.5 9.4 9.7 8.9 15.3 7.5 13.3 12
4 USA
Happy Camp, USA
16.8 9.9 17.4 13.3 5.3 4.5 4.7 14.1 65.4 43 6.2 18.2 16.6 9.6 18.8 28 13 -- --
5 USA
Adrian, USA
16.6 21.7 15.7 15.5 13.7 12.4 34.7 18.4 19.1 13.8 8.6 12.3 13.1 14.7 15.1 -- -- -- --
6 USA
Claymont, USA
16.5 16.1 17.9 14.3 13.3 12.7 32.2 20.7 17.8 13.8 11.8 13.5 15.1 16.4 16.7 -- -- -- --
7 USA
Robesonia, USA
16.3 17.8 20.5 12.7 12.9 11.9 37.9 19.7 14.5 10.8 7.7 13.5 16.8 19.5 -- -- -- -- --
8 USA
Attleboro, USA
15.8 4.1 84.2 -- -- 1.5 -- 15.6 10.5 11.4 6.4 8.4 8.8 5.3 8.1 -- -- -- --
9 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 -- -- -- --
10 USA
Huntington, USA
15.5 19.7 13.8 12.6 12.3 12.3 30 20.1 18.6 13.6 8.1 10.2 9.8 14.1 15.7 -- -- -- --
11 USA
Gordonville, USA
15.4 17.8 19.4 14.5 14.8 15.1 38.9 13.5 10 7.7 8.6 12.7 12.6 14.5 13.7 9.7 11 9.2 10.8
12 USA
Baldwin Park, USA
15.3 16.1 11.9 13.4 21.2 14.4 16.8 25.3 16.3 7 11.7 12.1 18 17.8 18.8 -- -- -- --
13 USA
Ridgewood, USA
15.3 3.3 4.8 4.8 3.7 4.5 5.3 6.3 6.5 7.3 7.1 114.7 5.3 7.8 -- -- -- -- --
14 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 -- -- -- -- --
15 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 -- -- -- --
16 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 -- -- -- -- --
17 USA
Cutler, USA
14.9 14.9 17.5 8.9 14.2 9.7 12.8 15.4 16 16.6 14.6 17.8 25.6 15.3 24.7 -- -- -- --
18 USA
Salton City, USA
14.9 5.2 18.6 22.7 36 32.9 21.7 8.9 6.3 10.9 5.4 6.1 6.9 8.5 6.8 -- -- -- --
19 USA
Homer, USA
14.9 -- -- 14.1 10.4 11.7 35.3 17.4 18.7 14.3 7.8 10.5 10 -- -- -- -- -- --
20 USA
Columbia, USA
14.9 15.8 15.7 11.1 11.5 12.2 33.9 18.9 15.4 11.7 7.6 11.1 15.3 18.8 -- -- -- -- --
21 USA
La Pine, USA
14.8 14.6 12.2 10.5 7.5 8.5 4.3 28.7 44.7 13.9 9 13.4 9.4 15.7 10.1 -- -- -- --
22 USA
Beloit, USA
14.8 12.1 7.9 11.3 10.3 10.7 41.7 18 17.6 12.3 7.5 13.7 -- 10.4 -- -- -- -- --
23 USA
Orleans, USA
14.7 6 7.1 5 3.3 3.7 4.7 11.7 63.7 51.3 6 7.4 4.6 8.3 19.6 20.8 8.2 -- --
24 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 -- -- -- -- --
25 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 -- -- -- -- --
26 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 -- -- -- --
27 USA
Schererville, USA
14.5 19.1 13.5 13.4 11 12.3 30 16.9 16.3 11 6.5 8.8 10 14 -- -- -- -- --
28 USA
North El Monte, USA
14.4 8.4 7.5 9.1 -- 19.9 15.3 21.2 15.5 20.4 10.9 4.9 -- 14.3 15.6 -- -- -- --
29 USA
Willowbrook, USA
14.4 12.7 11.5 9.2 15.4 11.2 10.1 16.6 14.1 16 15.1 16 24.1 12.7 -- -- -- -- --
30 USA
Grove City, USA
14.3 15.7 13.2 12.1 11.7 12 30.6 17.6 18.2 12.2 7.6 11.6 10.1 13 13.5 -- -- -- --
31 USA
Orrville, USA
14.3 16.1 14.7 12.1 11.5 11.3 30.9 17.2 17.1 11.6 7.4 11.3 10.1 13.1 14.6 -- -- -- --
32 USA
Republic, USA
14.3 19 16.8 13.2 7.6 8.2 9.7 9.8 46.8 10 9.9 12.3 6.9 14.9 24.1 -- -- -- --
33 USA
Crown Point, USA
14.2 18.8 13.1 13.4 11.2 11.7 31.1 17.3 16.7 11.2 6.5 8.5 7.8 13.9 13.6 -- -- -- --
34 USA
Columbus, USA
14.2 9.9 11.1 14.3 11 17.8 21.1 17.7 18.2 17.8 11.4 9.8 8.7 13.4 14.2 -- -- -- --
35 USA
Hope Mills, USA
14.2 11.5 11.5 13.4 10.8 12.1 22.3 17.3 15.5 14.2 8.8 14.4 7.6 11.2 11.1 -- 12.2 -- --
36 USA
Selinsgrove, USA
14.2 14.5 15.3 9.8 10.9 9.4 33 16.8 12.6 8.8 7 20.2 17.8 14.1 13.9 -- -- -- --
37 USA
Yukon, USA
14.2 16.3 15.1 12.8 11.5 14.1 24.9 18.6 13.1 12.3 7.2 13.3 10.6 -- -- -- -- -- --
38 USA
Willow Creek, USA
14.1 12.1 16.7 9.1 5.2 4.7 4.1 11.7 52.1 23.3 6.9 14.5 8.8 20.2 21.5 -- -- -- --
39 USA
Charlotte Hall, USA
14.1 -- -- -- 10.9 11.5 28.9 17.8 14.3 10.5 8.6 11.2 12.2 12.2 14.1 -- -- -- --
40 USA
Deschutes River Woods, USA
14.1 11.1 9.4 7.1 3.9 6.4 5.3 19.6 53.8 17.1 9 14.2 10.6 20.2 -- -- -- -- --
41 USA
Camp Hill, USA
14.1 15 14.8 10.3 12 11.6 30.7 17.9 14.2 11 6.7 10.8 15.7 12.9 14.1 -- -- -- --
42 USA
San Bernardino, USA
14 6.8 8.1 10.6 18.4 17.8 18.9 19.2 13.3 21.1 10.5 9.2 14.4 13 14.1 -- -- -- --
43 USA
Sandy Springs, USA
14 -- -- 14.4 11.3 14.8 23 18.4 16.1 15.7 8.3 11 8.6 8.5 -- -- -- -- --
44 USA
Clinton, USA
14 19.8 12.6 12.4 10.8 10.7 31.4 14.9 16.1 12.7 7.5 9.9 9.2 12.5 12.8 -- 9.3 9.5 12.2
45 USA
Gretna, USA
14 22.1 9.6 15.8 11.2 14.8 18.6 15.1 15.6 19.8 6.4 6.8 9.6 8.5 13 -- -- -- --
46 USA
Schlusser, USA
14 16 12.2 10.5 11.5 11 27.8 17.7 13.7 10.8 7.3 12.9 16.9 11.3 13.9 -- -- -- --
47 USA
Inverness, USA
13.9 -- -- -- 8.4 7.9 36.4 18.1 16.6 10.7 7.3 7.6 7.7 -- -- -- -- -- --
48 USA
Valparaiso, USA
13.9 18.9 13.1 12.7 11.2 10.3 25.3 18.1 18.3 12.1 7.4 10.5 10.8 13.9 -- -- -- -- --
49 USA
Dubuque, USA
13.9 19.7 12.8 12.4 10.9 11.3 33 14.4 16.7 12.7 6.7 7.6 9.1 10.8 13.7 11.6 12 -- --
50 USA
Columbus, USA
13.9 15.4 13.4 11.9 11.6 11.4 29.9 17.2 16.8 11.7 7.2 11.3 9.6 13.1 13.6 10.8 11.6 6.7 5.5

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