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 Chile
Coyhaique, Chile
41.5 6.2 11.3 20.3 39.9 55.6 84.4 104.9 62.7 40.3 22.4 12.3 10.4 34.2 39.3
2 Chile
Osorno, Chile
32.8 - - 9.5 40.7 53.3 62 63.6 40.5 21.7 16.6 9.4 6 38.2 30.8
3 Chile
Padre las Casas, Chile
32.5 5.8 10.3 13 35.6 63 48.5 59.4 60 34.9 23.2 11.5 6.7 43.3 38.8
4 Chile
Providencia, Chile
29.5 - 12.1 20.6 37.8 33 44.4 61.6 38.3 24.1 17.5 12.2 9.1 - -
5 Chile
Santiago, Chile
27.7 21.1 19.2 17.7 31.7 33.5 45.4 56.6 35.8 19 17.3 14.6 14.6 29.4 23.1
6 Chile
Linares, Chile
27.6 7.4 9.5 14.6 36.7 56.8 46.1 59.2 39.6 18.8 9.8 8.7 8.5 25.5 27.1
7 Chile
Pudahuel, Chile
27.6 17.6 17.3 14.9 22.1 30.6 48 59.8 36.7 18.8 16.8 15.2 14.9 - -
8 Chile
Rancagua, Chile
26.9 9.6 13.9 16.5 27.9 39.9 50.5 62 34.9 18.2 13 11 12.1 22.9 23.3
9 Chile
Puerto Montt, Chile
26.4 8 12 16.1 27.9 37.2 53.2 46.2 38.8 23.4 16 14.8 9.5 22.6 29.6
10 Chile
Los Cerrillos, Chile
26.2 17 15.9 15.9 29.4 31.9 44.7 55.5 33.3 17.3 17.1 13.3 15.8 - -
11 Chile
Curico, Chile
25.8 10.8 12.1 15.6 27.9 43 46.5 55.2 34.7 18.1 10 9.2 9.9 16.8 23
12 Chile
Quilicura, Chile
25.3 17.8 17.8 17.4 30.4 29.2 37.8 51.7 32.2 17.9 16.2 14.2 13.6 - -
13 Chile
La Union, Chile
24.3 6.6 8.4 11.5 27.5 39.9 52.6 45.7 35.1 20.6 14.1 9.5 6.3 - -
14 Chile
Rengo, Chile
24.1 11 12.4 12.9 22.6 41.1 50.2 56.4 32.1 15.1 9.1 5.7 6.2 18.9 16.3
15 Peru
Lima, Peru
23.7 13.9 12.1 15.4 19.4 29.1 31.3 28.7 29.7 34.2 29.5 22 19.8 28 27.7
16 Chile
Puente Alto, Chile
23.5 15.9 15.8 16 29.8 28.9 34.2 45.3 29.7 17.1 15.2 14.2 13.4 - -
17 Chile
Talagante, Chile
22.7 13.9 12.7 12.8 28 27.7 37.4 47.5 27.5 13.2 14 14.1 15.8 - -
18 Colombia
Sabaneta, Colombia
22.4 - 35 31.3 23.6 18.2 19.1 17.8 22.1 19.2 19.5 23.6 22.5 - -
19 Chile
Puerto Aysen, Chile
22 5.4 4.8 12.4 20.9 32.6 54.7 44 29.1 16 12.2 10 8.5 - -
20 Chile
Los Angeles, Chile
21.7 7.5 11.8 20.2 27.9 43.8 37 29.2 33 16.2 10.4 6.5 6.1 21.6 24.1
21 Chile
Curanilahue, Chile
21.6 11.8 13.7 12.7 22 35.7 35.8 28.4 37.9 21.1 17.1 9.7 6.8 - -
22 Colombia
Itaguei, Colombia
21.6 - 33.6 33.1 21.4 19.4 15.9 14.8 23.1 18 19.2 22.7 21.6 - -
23 Chile
Talcahuano, Chile
21.4 17 20 15.8 22.1 31.3 34.4 27.2 26.7 19.7 14.5 12.5 12.7 15.7 21.3
24 Chile
San Fernando, Chile
21 11.2 12.9 12.5 19.8 38.8 41.6 47.1 26.6 13.3 8.3 5.9 5.6 15.3 18.1
25 Chile
Chillan, Chile
20.4 7.5 12.1 19 27.1 35.3 33.5 27.1 27.5 17 12.8 8.6 7.8 21.5 27.7
26 Chile
Maule, Chile
20.3 10.7 12.2 17.9 25.6 33.7 28.2 35.1 30.9 16.1 10.6 8.1 7.2 16.1 17.1
27 Chile
Temuco, Chile
20.2 5.7 8.3 9.9 22.7 42.1 33.7 31.6 33.1 19.4 12.6 7 5.1 30.4 28.7
28 Brazil
Campinas, Brazil
20 13 10 12.6 15.8 24.7 27.7 26 24.5 19.2 25.1 17.1 15.2 16 -
29 Chile
Las Condes, Chile
19.9 25.9 22.8 18.8 27 21.8 19.5 33.1 22.3 14.7 12.4 11.7 12.8 - -
30 Colombia
Medellin, Colombia
19.9 23.5 32.1 30.9 19.2 17.2 13.8 12.7 20.8 16.5 16.3 20.3 18.9 - -
31 Brazil
Osasco, Brazil
19.8 17.6 16.2 17.1 22.4 24.6 22.6 23.2 19.9 22.2 18.5 15.2 15.7 22.1 -
32 Chile
Chiguayante, Chile
19.8 10.5 12.1 11.4 21.4 34.3 32.8 31.3 29.7 19.3 12.1 7.8 7 17 16.1
33 Colombia
Bello, Colombia
18.9 18.7 29.3 31.1 20.2 17.5 13.4 11.9 19.9 15.6 14.1 17.2 18 - -
34 Brazil
Santa Gertrudes, Brazil
18.8 12.9 14.5 17.9 19.4 16.9 21.2 22.3 21.6 29.2 22.7 14.3 10.7 - -
35 Colombia
Caldas, Colombia
18.8 - - - 21.1 18.6 16.2 16.8 25.1 18.3 16.9 18 19.5 - -
36 Brazil
Guarulhos, Brazil
18.7 19.3 18 12.7 21.2 22.5 24.4 22.6 15.8 18.9 18.7 12.7 12.8 21.6 17.3
37 Peru
Trujillo, Peru
18.1 - 12.4 16.2 18 20.9 22.4 21.9 20.3 16.6 15.7 16 16.2 - -
38 Colombia
Envigado, Colombia
17.8 - 30.8 30.7 19 15.6 12 12.4 19.2 14 14.4 16.4 16.6 - -
39 Chile
Talca, Chile
17.6 9.1 9.5 15.5 21.7 29.1 25 35.2 29.7 13.4 7.3 4.5 4.5 13.7 14.3
40 Colombia
La Estrella, Colombia
17.5 - 25.2 24.7 17.1 16 12.9 13.6 21 15.7 15.4 18.2 16.9 - -
41 Brazil
Sao Caetano do Sul, Brazil
17.2 16.8 16.3 13.8 17.6 21 21.1 22.7 14.9 13 16.7 12.7 13.7 18.1 -
42 Colombia
Girardota, Colombia
17.1 - - - 16 13.3 13.7 17.2 27.8 17.1 17 15.5 14.2 - -
43 Argentina
Lanus Este, Argentina
16.8 13.1 17.4 12.6 19 16.4 20.4 20.3 18.4 14.4 13.5 16.9 17.7 - -
44 Brazil
Sao Bernardo do Campo, Brazil
16.7 20.8 13.7 13.1 17.5 16.8 18.1 20.4 15 17.4 18 14.5 15 16.4 -
45 Brazil
Rio Branco, Brazil
16 - 5.7 4.9 6.7 8.4 12.6 18.4 47.6 37 9.4 6.9 4.2 - -
46 Chile
Puchuncavi, Chile
15.9 16.5 15.6 15.2 18.9 19.1 14.8 18.2 16.6 12.8 12.4 15 15.6 14.8 13.7
47 Chile
Tome, Chile
15.7 12.9 15.4 12.8 20.9 26.6 19.1 17.9 21 12.2 10.4 8.1 9.1 20.9 14.8
48 Chile
La Greda, Chile
15.6 13.2 13.2 14.4 17.6 19.1 17.8 21.7 17.5 12.8 12.3 13 12 - -
49 Brazil
Santos, Brazil
15.4 14.3 12.9 10.4 15.6 16.3 22.9 19.1 15.1 14.2 14.6 12.5 13.9 14.8 15.9
50 Brazil
Sao Paulo, Brazil
15.3 14.2 11.2 11.3 15.5 16.1 19.8 20.8 15.5 17.8 15.5 11.4 11.1 16.2 16

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