World's most polluted cities 2019 (PM2.5)

The most polluted cities according to data aggregated from over 60,000 data points.

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2019

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2019 World air quality report

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PM2.5 Legend
WHO target
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
Unit: µg/m³
Rank City 2019 AVG JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2018 AVG 2017 AVG
1 Mexico
Toluca, Mexico
29.4 33.5 30.5 29.6 41.1 44.4 21.8 22.1 22.2 24 21.7 28.8 35.1 - -
2 Mexico
Nezahualcóyotl, Mexico
27.1 30.7 24.2 27.6 36.9 46.5 16.7 21.3 18.4 16.3 14 22 33.3 - -
3 Mexico
Ecatepec de Morelos, Mexico
25.4 32.3 27.8 28 31.4 36 19 19.2 19 18.9 17.1 25 33.2 - -
4 Mexico
Tlalnepantla, Mexico
24.8 22 24.7 25.9 32 34 21.4 21.2 19.8 20.6 15.7 27.8 26.2 - -
5 Mexico
Garcia, Mexico
24.3 21.6 30.3 24.1 20.7 27.5 18 18.9 18.4 21.8 24.7 35.1 30.5 - -
6 Mexico
Minatitlan, Mexico
24 - 18.4 19 19.5 40.5 23.7 23.7 24.7 21.5 18.5 22.8 25.5 - -
7 Mexico
Alvaro Obregon, Mexico
23.9 15.8 13.5 22.5 29.6 38.5 17.9 25.5 21.7 22.1 20 26.5 32 - -
8 Mexico
Apodaca, Mexico
23.2 22.6 27.8 22.1 23 29.5 22.1 21.4 20.2 18.9 19 26 23.5 - -
9 Mexico
Gustavo A. Madero, Mexico
22.8 26.5 27.2 27.1 32.9 40.2 16.2 18.6 17.1 15.4 14.7 19.9 26.2 - -
10 Mexico
Cuernavaca, Mexico
22.8 20.8 33 27.4 41.7 52.4 15.3 13.5 10.7 12.2 12.5 16.8 10.5 - -
11 Mexico
Santa Catarina, Mexico
22.6 27.4 34.8 27 21.5 27.4 16.9 18.5 16.3 15.1 16.7 28.6 24.7 - -
12 Mexico
Leon, Mexico
20.9 18.5 17.5 21.5 25.2 28.9 17.6 19.8 19.7 18.9 18.1 20.8 24 20.8 27.3
13 Mexico
Salamanca, Mexico
20.9 26.9 20.6 20.9 24 33.1 18.2 18.7 18.1 15.4 12.3 18.7 24.3 20.9 25.1
14 Mexico
General Escobedo, Mexico
20.9 20.2 27.7 20.8 25.8 38.9 9.9 10 14.4 12.7 13.6 23.6 22.4 - -
15 Mexico
Patzcuaro, Mexico
20.8 - 15.4 20.2 28.5 36.5 20.7 17 14.8 16.5 13.1 16.8 22.8 - -
16 Mexico
San Nicolas de los Garza, Mexico
20.8 30 29.6 22.5 19.8 25.6 16.7 16.2 15.4 16.5 16.8 24.8 24.2 - -
17 Mexico
Mexico City, Mexico
20.5 24.3 19 21.1 27.1 34 15.5 17.1 15.4 15.4 13.7 18.8 25.3 19.7 20.4
18 Mexico
Celaya, Mexico
20 25.3 20.6 20.4 22.1 31.1 16.6 15.7 15.3 13.5 12 18 27.1 20.1 22.2
19 Mexico
Coyoacan, Mexico
19.6 21.7 18 19.5 28.8 38.2 13.7 14.6 13 13.7 13.5 17.4 22.6 - -
20 Mexico
Monterrey, Mexico
19.3 24.3 31 21.9 22.9 26.6 12.8 15.1 14 13.2 13.5 20.7 16.6 17.2 15.7
21 Mexico
Irapuato, Mexico
19.2 24.2 24.8 20.3 23.9 29.7 14.1 15.3 14.5 12.5 10.2 15.9 24.8 19.7 23.2
22 Mexico
Guadalajara, Mexico
18.9 26 21.4 20.1 21.4 25.3 19.1 11.9 13 12.4 12.9 17.9 29.1 - -
23 Mexico
Vinas del Sol, Mexico
18.4 - 38.4 16.6 10.7 9.8 14 14.3 14.2 13.6 24.4 35.9 30.5 - -
24 Mexico
Tlalpan, Mexico
18.4 20.3 15.5 17.9 26.7 39.7 13.6 14.6 12.4 13.4 11.7 16.5 21.2 - -
25 Mexico
Mexicali, Mexico
17.7 40.2 21.5 13.8 8.7 6.9 10.5 10.4 9.5 10.2 17.7 30.3 32.7 30.2 22.7
26 Mexico
Guadalupe, Mexico
17.1 20.4 21.1 20.4 16.3 22.2 14.3 15.3 13.7 12.2 12.5 17.8 16.9 - -
27 Mexico
Durango, Mexico
16.7 17.8 15.2 19 17 28.5 16.3 16.3 15 10.6 12.6 13.7 18.1 - -
28 Mexico
San Pedro Garza Garcia, Mexico
16.6 16 22.4 19.7 15.6 24.9 13.7 15.6 18.9 13.8 13.4 15.6 11.2 - -
29 Mexico
Morelia, Mexico
16.5 - 18.8 24.2 28.2 28.1 12.7 10.9 10.6 12.1 13.9 15.3 19 - -
30 Mexico
Pachuca de Soto, Mexico
15.5 9.8 17.2 12.5 26.8 34.2 12 10.8 12.2 8.7 8.6 11.5 17.4 13.3 29.8
31 Mexico
San Miguel de Allende, Mexico
14 15.4 13.5 15.8 17.9 23.6 8.2 8.8 13.7 9.4 8.3 12.5 17.2 - -
32 Mexico
Islas Agrarias Grupo A, Mexico
13.6 - 20.3 12.2 7.3 7.1 11.8 10.8 9.5 10.4 16.6 23.3 22.8 - -
33 Mexico
Abasolo, Mexico
13.6 21.3 13.6 14 18.8 25.7 10.1 10.1 9.2 8.5 6 8.8 18.8 13 -
34 Mexico
Guanajuato, Mexico
12.8 12.1 12.6 15.8 16.7 21.1 10.6 11.7 9.8 9.9 7 8.8 13.4 9 -
35 Mexico
San Luis de la Paz, Mexico
11.9 10.6 11.3 12.2 16.8 22.7 9.9 12 11.4 8.8 5.8 9.6 10.5 - -
36 Mexico
Oaxaca, Mexico
10 - - - - 18.7 10.4 11.6 10.6 8.1 7 9.2 12.8 - -
37 Mexico
Tepic, Mexico
9.2 - - - - 17.8 17.1 9.2 6.5 5.9 5.7 7.7 11.5 - -
38 Mexico
Santiago de Queretaro, Mexico
9.2 - - - - 21.9 9.6 10.4 10.6 7.7 5.3 7.5 9.7 - -
39 Mexico
Iztacalco, Mexico
6.4 2 1.6 1.3 1.6 8.2 6.2 7.6 6.4 5.2 6.1 7.4 9.7 - -

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