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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World air quality report

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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 USA
Yosemite Lakes, USA
37.8 25.1 19.8 9.5 8 - - - 35.3 114.2 56.1 28.4 25.3 8.8 - -
2 USA
Oakhurst, USA
29.9 17.3 14.2 8.2 8.2 4.3 4.9 7.2 30.5 152 65.9 21.4 14.5 8.1 - -
3 USA
Springville, USA
28.7 8.9 11.7 7 13.2 8.8 10.9 8.8 29.2 133.1 62.1 21.2 15.7 7.6 - -
4 USA
Happy Camp, USA
28 16.3 22.5 12.9 7.9 3.4 2.5 7.2 14.6 154.4 43.6 25.6 18.1 13 - -
5 USA
Wawona, USA
27.8 18.9 15 9.6 7.6 4.6 4.8 6.9 27 136.9 48.8 20.7 17.5 9.8 - -
6 Mexico
Toluca, Mexico
27.1 26.6 28.8 32.1 31 32.9 21.4 19.7 20.3 22.1 27.4 28.9 33.8 - - -
7 USA
Susanville, USA
26.2 7.5 5.7 5.1 3.7 2.8 3.2 12.4 38.7 110.4 61.9 9.9 11.9 6.4 - -
8 Mexico
Tijuana, Mexico
26.1 46.1 34.3 26.5 22.1 21.6 22.1 16.6 22.2 31.7 26.3 24 17 - - -
9 USA
Mammoth Lakes, USA
25.6 10.9 9.8 5.7 4.7 4 4.4 5.3 16 143.5 109.4 15.3 13.9 - - -
10 USA
Quincy, USA
25.4 11.8 13.5 5.9 4.5 3.1 3.2 5.6 75.4 133.6 16 13.9 15.8 8.2 11.4 13.3
11 USA
Tuolumne, USA
25.3 33.6 26.6 18.4 13.7 5.8 4.1 6.1 35.4 69.3 27 26.8 29.8 12.5 - -
12 USA
Del Rey, USA
24.7 31.5 27.4 11.7 12.6 7.6 8.5 10.5 35.4 45.8 37.6 30.7 30.2 14.6 - -
13 Mexico
Puebla, Mexico
24.6 50.1 28.1 14 12.9 12 14 13.3 13.4 22.5 28.9 36.5 47.7 - - -
14 Mexico
Guadalajara, Mexico
24.5 25.1 22 26.5 30.5 27.4 22.9 17.8 14 16.1 26 41 31.3 18.9 - -
15 USA
Coarsegold, USA
24.5 17 14.5 6.9 7.2 3.7 4.7 5.2 36.5 96 37.9 31.6 15.6 6.6 - -
16 USA
Reedley, USA
24.1 28.2 23.9 10.3 12.1 7.1 7.7 10 32.7 46.5 37.1 32.1 35.2 12.2 - -
17 Mexico
Garcia, Mexico
23.9 31.3 34.6 39.6 32.2 16.4 14.9 18 15.4 23.8 27.5 24.4 17.1 24.3 - -
18 USA
Tulare, USA
23.8 30.1 27.8 12.2 13.1 7.7 8.2 11 30.8 38.8 36 33.8 35.6 13.3 - -
19 Mexico
Emiliano Zapata, Mexico
23.7 23.6 22.7 29 30.4 30.3 24.5 17.3 15.2 17.3 21.6 25.2 28.1 - - -
20 USA
Friant, USA
23.6 22.5 16.8 6.5 7.7 4.5 5.4 7.6 25 82.7 49.3 23.6 22 7.8 - -
21 USA
Visalia, USA
23.5 27 23.8 10.1 11.3 7.2 8.3 11.3 36.4 43.1 36.1 31.3 35.5 12.8 17.6 16.8
22 Mexico
Nezahualcóyotl, Mexico
23.3 25.5 24 27.7 32 29 18.6 17.2 13.5 10.7 - - 26.8 - - -
23 USA
Mariposa, USA
23.2 15 13 5.5 5.8 3.6 4.1 6.6 35.8 97.1 45.9 21.8 11.7 6.6 - -
24 USA
Three Rivers, USA
23.1 6.3 5.1 3.8 7.7 8 9.9 11.1 25 69.7 63.4 18.1 10.9 9 20.8 20.4
25 Mexico
Nezahualcoyotl, Mexico
22.9 26.1 25.8 27.6 31.8 28.5 17.8 16.7 13.2 10.4 - - - - - -
26 Mexico
Juarez, Mexico
22.9 11 14.4 25.3 23.3 21.2 17.8 24.8 27.8 23.1 19 19.8 29.5 - - -
27 Mexico
Minatitlan, Mexico
22.9 23.3 22.4 26.7 42 31.2 25.1 22.8 13.8 13.5 15.8 14.8 21 24 - -
28 USA
El Portal, USA
22.9 8.9 7.1 5.1 3.7 4 4.4 6.5 33.1 123 39.8 11.1 4.9 6.4 - -
29 USA
Clovis, USA
22.8 27.1 22 8.8 8.3 4.8 5.8 8.3 37.5 52.3 35.2 28.2 32.9 10.1 - -
30 USA
McCloud, USA
22.7 28.4 25.8 17.7 8.8 4.3 3.4 12 30.3 48.7 19.8 27.9 32 16 - -
31 Mexico
Cadereyta Jimenez, Mexico
22.4 21.4 19.8 21.9 23.4 19.8 26.8 24.5 18.4 24.7 22.1 20 26.4 - - -
32 USA
Fresno, USA
22.2 27.9 23.1 8.8 8 5 5.8 8.3 36.2 46.6 34.2 29.9 32.9 12 14 10.9
33 USA
Oroville, USA
22.1 18.7 14.4 5.8 5.3 3 3.8 5.7 36.8 90.4 27.2 17.3 22.6 7.2 - -
34 USA
Turner, USA
22 - - - 2.3 3.8 3.1 4.8 4.5 142.1 11.1 9.8 7.5 - - -
35 USA
Shafter, USA
21.9 27.2 21.5 9.4 10.2 5.5 5.3 8.4 33.5 37.4 30.6 32.3 31.6 10.7 - -
36 Mexico
Ecatepec de Morelos, Mexico
21.3 25.7 22.7 24.2 25.5 25 16.1 16.3 14.3 16 21 20.6 24.9 - - -
37 USA
Portola, USA
21.3 27 23.3 17.2 13.2 8.6 7.6 11 35 60.2 14.3 19.3 23 16.9 20.4 19.1
38 Mexico
Tlalnepantla de Baz, Mexico
21.2 21.5 24.2 23.8 23.6 23.8 21.1 19.7 15.3 19 17.8 - - - - -
39 Mexico
Tlalnepantla, Mexico
21.2 20.9 22.7 23.4 23 23.4 20.9 19.3 15 19.4 17.6 21.6 23.8 - - -
40 Mexico
Venustiano Carranza, Mexico
21.1 21.1 21.1 26 25 25.7 18.9 15.7 17.3 18.4 19.9 27.3 - - - -
41 USA
Orleans, USA
20.8 8.5 11.8 8 5.3 3.3 3.9 9.4 14.7 65.9 61.9 17.6 13.6 8.2 - -
42 Mexico
Santa Catarina, Mexico
20.7 25.7 27.5 25.5 21.4 18.5 15.7 19.2 15.4 18.7 20.5 20.3 20.1 22.6 - -
43 USA
Bakersfield, USA
20.7 27 20.7 8.6 8.8 5.4 6.2 8.9 33.2 36 32 30.8 30.4 11.3 15.9 16.2
44 USA
Groveland, USA
20.7 11.9 8.4 5.2 5.2 4 3.9 4.3 45.7 91.6 34.1 12.5 6.6 6.1 - -
45 USA
La Grange, USA
20.7 16.5 13.9 5.9 6 4.3 3.3 - 45.9 67.7 31.6 17.9 15.9 8 - -
46 USA
Twain Harte, USA
20.7 20.4 17.7 12.1 9.9 5.5 4.3 6.8 38.3 73.7 25.7 13.3 14.2 8.3 - -
47 USA
Escalon, USA
20.5 - - - 6.3 4.4 4.3 8 28.8 37.6 25.7 27 30 10.2 - -
48 USA
Sandy Hills, USA
20.5 22 16 9 9.1 8.7 8.8 14 23.3 26.7 25.3 26.7 38.3 - - -
49 USA
Hanford, USA
20.4 18.2 22.2 8.9 8.6 8.5 9.2 10.5 34.3 37.2 29.1 25.4 27.4 - - -
50 USA
Kernville, USA
20.2 7.5 7.6 10.8 - 7.8 10.1 10.7 29.9 64.5 40.1 11.5 7.3 9.3 - -

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