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 Canada
Grimshaw, Canada
27.5 -- -- -- -- 53.1 27.4 38.9 34.7 55.6 9.5 11.1 5 -- -- -- -- -- --
2 Canada
Fort Mckay, Canada
23.8 9.1 5.7 8.7 6.2 43.4 33.9 50.5 44.7 62.6 7.7 6.4 5.2 6.3 5.6 -- -- -- --
3 Canada
Fort McMurray, Canada
22.8 9.7 5.8 6.6 6.1 48.7 30.8 46.1 44.4 52.7 7.6 5.7 4.1 7.5 7 5.4 6.4 -- --
4 Canada
Peace River, Canada
22.4 18.9 4.8 5.3 3.8 61.3 31.9 33.8 28 45.2 7.9 8.1 5.8 7.1 6.3 -- -- -- --
5 Canada
Fort Vermilion, Canada
22.3 6.3 1.6 2 2.7 30 35 49.5 46.2 49.1 10.2 12.1 6.6 -- -- -- -- -- --
6 Canada
Timberlea, Canada
21.4 9.4 5 6.2 5.4 44.2 22.5 46.8 40.9 55.7 6 5.8 5.6 -- -- -- -- -- --
7 Canada
Yellowknife, Canada
20.8 4.4 3.1 3.7 3.6 11.5 19.8 50.7 63 70.6 10.6 3.6 3.8 5.3 4.6 4.4 4.9 -- --
8 Canada
Conklin, Canada
19.4 8.2 3.2 4.7 5.2 49 27.9 36.3 33 47.5 7.1 5.5 4.3 6.3 6.5 4.6 5.7 -- --
9 Canada
Fort Chipewyan, Canada
19.2 3.9 2.2 3.6 3.2 20.9 27.9 35.3 58.4 47.1 -- -- 2.9 4.9 4.4 3.8 5.6 4.9 3.6
10 Canada
Fort St John, Canada
18.7 8.5 2.4 5.6 3.8 48.7 34.5 36.5 23 43.2 6 7.5 4 6.3 5.8 4.7 -- -- --
11 Canada
Bonnyville, Canada
18.6 17.2 5.6 10 6.6 24.7 26.1 29.5 23.5 24.4 8.3 -- -- 8.5 9.1 4.9 5.5 -- --
12 Canada
Beaumont, Canada
17.7 23.9 8.2 14.5 8.7 36.1 20.7 28.2 20 29.3 5.5 8 5.7 12.5 -- -- -- -- --
13 Canada
Salmon Arm, Canada
17.7 12.9 9.8 6.6 4 10.6 13.7 18 95 18.4 6.3 11.2 7.5 9.5 37.4 -- -- -- --
14 Canada
Wabasca-Desmarais, Canada
17.5 -- -- -- 4.2 29.3 22.9 31.9 24.6 23.7 3.9 4.3 2.6 5.6 7.6 -- -- -- --
15 Canada
Fort Saskatchewan, Canada
16.8 17.9 6.2 10.7 7.2 35.9 21.9 31.4 19.3 28.3 7.1 9.2 7.8 7.4 8.2 5.8 7.5 11.6 7.9
16 Canada
Redwater, Canada
16.8 14.2 5.1 9.7 6.4 34 23.4 35.2 19.5 33.3 5.8 8 6.3 7.6 8.5 5.5 7.9 -- --
17 Canada
Spruce Grove, Canada
16.8 17.7 6 10 3.7 33.7 20.6 28.8 21.2 29.5 4 5.5 2.8 7.3 9.6 7.2 9.8 -- --
18 Canada
Chetwynd, Canada
16.7 -- -- 7.5 6.3 21.7 9.9 70.9 32.5 32.7 6.9 8.1 3.5 6.7 4.5 -- -- -- --
19 Canada
Edmonton, Canada
16.6 21 7 12 7.2 32.2 20.3 28.1 20.4 30 5.6 7.9 6 8.7 9.5 6.5 7.4 10.5 8.2
20 Canada
Vanderhoof, Canada
16.6 12.9 6.4 8.9 6.4 22.4 6.8 50.8 24.3 32.3 6.2 9.8 10.7 8.8 8.6 9.5 -- -- --
21 Canada
Athabasca, Canada
16.5 17.7 4.4 7.3 6.2 32.2 25.1 35.5 22.1 24.8 4.7 7.8 5.5 7.3 9.4 -- -- -- --
22 Canada
Gibbons, Canada
16.3 16.7 7.3 12 8.6 23.7 21.2 30 18.3 35.5 7.2 8.8 7.2 9.6 9.5 7.7 8.7 -- --
23 Canada
Devon, Canada
16.2 22.8 7.6 13.4 8.1 32.7 19.9 25 19.4 23.1 5.3 7.9 5 6.1 9.3 -- -- -- --
24 Canada
Nampa, Canada
16.2 14.5 3.3 3.9 3.1 45 30 18.3 36.5 24.5 6.7 6.9 2.8 -- -- -- -- -- --
25 Canada
St. Albert, Canada
15.8 20.4 6.2 10.8 6.7 31.9 19.3 25.3 18.8 28.7 6.1 8 6.1 8.5 9.8 6.7 6.7 -- --
26 Canada
Golden, Canada
15.8 19.9 17.5 15.2 5.9 12 8.5 19.2 34.8 10.5 9.9 19.1 16.3 13.8 22.2 11.5 -- -- --
27 Canada
Sherwood Park, Canada
15.7 18.3 5.7 10.6 7.3 30.3 19.4 29.3 19.7 30 5 6.9 4.7 7.1 8.5 6.3 8 -- --
28 Canada
Wainwright, Canada
15.7 18.3 7.6 10.7 6 28 20.5 38.7 24.6 22 6 8.5 7.8 8.1 12.2 -- -- -- --
29 Canada
Valemount, Canada
15.7 11.6 9.7 18 8.1 17.3 13.3 28.8 24.6 24 10.8 12.8 8.5 10 11 8.5 -- -- --
30 Canada
Dalmeny, Canada
15.7 19.7 8.3 11.3 6.7 17.1 14.5 21.7 23 40.1 5.6 9.7 9.2 10 -- -- -- -- --
31 Canada
Saskatoon, Canada
15.5 17.1 8.1 11.3 6.5 21.9 21.7 22.5 21.1 37.8 5 7.7 6 7.8 10.4 -- 8.2 -- --
32 Canada
Anzac, Canada
15.4 5.6 3.6 4.4 3.9 20 28.6 38.3 25.5 43.5 -- -- 3.1 5.5 5.8 4.5 5.9 -- --
33 Canada
Camrose, Canada
15.3 18.7 7.8 13.2 7.6 25.6 20.2 18.5 21.7 30.1 4.9 7.5 5.5 7.9 10.6 -- -- -- --
34 Canada
Carrot Creek, Canada
15.3 24.9 3.5 7.4 3.9 36.1 22.3 25.5 20.2 18.8 4.6 6 4.6 8.3 7.1 -- -- -- --
35 Canada
Lamont, Canada
15.3 13 4.8 9.1 5.9 30.2 19.8 32.5 17.4 25.7 6.6 8 7.2 -- -- -- -- -- --
36 Canada
Mont-Royal, Canada
15.3 13.8 16.5 14.1 13.2 14 29.1 22.2 12.4 17 11.6 10.1 12.8 15.9 -- -- -- -- --
37 Canada
Fort Nelson, Canada
15 1.8 1.3 1.8 2 18.2 16 46.4 16.6 38.6 11.9 2.7 1.7 3.3 4.9 -- -- -- --
38 Canada
Bruderheim, Canada
14.9 14.8 5.9 9.6 6.3 33.7 18.8 27.9 15.9 25.2 6.2 7.7 6.9 7.4 8.4 6.1 7.7 10.7 7
39 Canada
Waskatenau, Canada
14.9 19.1 7.5 10.7 7.5 27 15.1 29.1 19 21.8 4.8 7.7 5.8 -- -- -- -- -- --
40 Canada
White Lake, Canada
14.9 7 5.6 5.3 4 6.9 8.1 19.2 85 14.8 6.1 7.6 6.5 -- -- -- -- -- --
41 Canada
Prince Albert, Canada
14.9 -- -- -- 5.2 17.3 13.6 18.2 25.1 27.2 5.9 6.8 6.9 5.9 10.9 7.4 -- -- --
42 Canada
Cold Lake, Canada
14.8 10.2 4.2 5.9 5.2 30.2 22.6 25.2 21.2 34.4 4.6 6.7 6.2 7.1 8.1 4.9 4.4 -- --
43 Canada
Leduc, Canada
14.8 10.7 4.8 10.2 5.4 34.9 19.2 25.7 17.1 29.2 5.8 8.3 5.2 7.9 12.9 -- -- -- --
44 Canada
Meadow Lake, Canada
14.7 14.7 8.3 7.3 4.5 20.1 22.3 20.9 21.4 20.7 3.2 9.7 -- 8 15.8 -- -- -- --
45 Canada
Elk Island, Canada
14.6 13.2 4 7.9 5.8 33.2 20.3 31.1 16.8 26 5.4 6.4 4.5 -- -- -- -- -- --
46 Canada
Eagle Bay, Canada
14.5 9.2 9.7 7.3 4.5 6.4 9.8 22.4 63.6 18.1 7.9 11.1 6.6 -- -- -- -- -- --
47 Canada
Janvier, Canada
14.3 7.4 3.2 4.5 4.7 30.5 25.9 31.3 26.9 25.7 4.8 4.7 3.6 -- -- -- -- -- --
48 Canada
Smoky Heights, Canada
14.3 9.1 2.2 4.5 3.9 51.7 20.6 24.3 19.9 21.8 5.2 6.2 5.3 -- -- -- -- -- --
49 Canada
Patricia Mcinnes, Canada
14.2 5.2 2.9 4 4.9 20.3 24.3 31.9 28.5 49 -- -- 2.2 5.9 5.3 -- -- -- --
50 Canada
Bassano, Canada
14.1 8.8 7.6 13 5.8 18.7 19.5 36.4 20.5 23.1 4.8 6.8 3.3 7.7 -- -- -- -- --

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