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 Taiwan
Kinmen, Taiwan
23 33.2 28.4 31.7 25.4 22.2 13 12.6 15.1 17.9 27.1 21.9 26 - -
2 Taiwan
Kaohsiung, Taiwan
22.7 41.8 30.5 28.8 22.6 18.1 8.2 9.2 11.2 19.4 27.4 28.8 26.6 24.4 27.7
3 Taiwan
Tainan, Taiwan
22.6 37.4 29.9 27.8 23.3 20.7 10.5 11.3 13.1 19.9 27.9 26 23.7 23.9 24.9
4 Taiwan
Fengyuan, Taiwan
22.2 - - - 27.6 23.3 13.7 15.5 19.7 22.9 29.2 25.3 26.6 - -
5 Taiwan
Chiayi city, Taiwan
21.5 33.5 29.6 28.4 24.2 21.2 10.6 10.7 13 18.6 25.6 22.9 20.1 23.7 24.1
6 Taiwan
Yunlin, Taiwan
20.5 28.5 29.1 28.5 23.4 19.8 10.7 10.2 12.3 17 26.3 22.1 18.1 23.9 26.6
7 Taiwan
Nantou, Taiwan
20.3 24.5 27.9 28.7 24.6 16.7 7.8 10.6 14.1 20.3 26.2 23.8 18.6 22.9 26.5
8 Taiwan
Pingtung, Taiwan
19.9 33.6 24 23.2 21.5 15.9 9.9 9.9 10.7 18.1 23.8 26.3 22.5 21.5 23.3
9 Taiwan
Lienchiang, Taiwan
19.4 26.4 17.9 23.3 23.5 21.4 14.2 11.3 15.2 15.4 22.5 19.2 21 - -
10 Taiwan
Changhua, Taiwan
19.3 24.7 23.9 25.9 22.3 20.7 11.6 12.2 14.7 17.3 24.1 18 16.1 21.8 22.8
11 Taiwan
Taichung, Taiwan
18 20.3 21.9 23.5 20.6 17.2 10.7 11.8 14.4 16.3 23.9 18.2 17 19.2 20.3
12 Taiwan
Xindian, Taiwan
17.3 - 15.7 23.3 25.5 16.6 18 14 11.7 12.3 19.4 15.7 15.9 - -
13 Taiwan
Miaoli, Taiwan
16.6 20.1 20.7 22.6 20.5 17.3 10.4 9.8 12.5 16.4 19.7 15.7 14.4 19.6 19.1
14 Taiwan
Taoyuan, Taiwan
16 17.9 18 21 20.3 16.4 12.9 13 13.6 13.2 17.9 14.3 13.7 17.9 17.5
15 Taiwan
Hsinchu, Taiwan
15 19.4 20 19.8 17.7 14.7 9.5 9.7 11 12.5 17.7 14.8 13.6 - -
16 Taiwan
New Taipei, Taiwan
14.1 14.4 14.1 18.6 19.1 12.6 11.5 10.7 9.9 10.6 22 13.5 12.8 15.2 16.9
17 Taiwan
Taipei, Taiwan
13.9 14.1 14.4 19 20 14.7 12.1 10.9 10 10 15.6 13 12.2 14.9 15.8
18 Taiwan
Penghu, Taiwan
13.1 19 17.9 15.2 12.7 11.9 6.1 6.2 6.7 9.4 18.6 15.2 13.1 14.3 15.7
19 Taiwan
Keelung, Taiwan
12.6 13 12.3 16.2 15.5 12.3 10.6 9.8 9.4 7.7 14.7 14.4 13.8 13.5 15.7
20 Taiwan
Yilan, Taiwan
11 10 10.2 14.3 12.9 10.9 10.9 11 10.7 8.5 12.3 10.8 9.4 11.8 12.7
21 Taiwan
Hualien, Taiwan
9.4 9.1 9.4 12.3 9.7 9.1 8.7 8.4 8.3 7.1 12.3 9.7 8 8.8 11.9
22 Taiwan
Taitung, Taiwan
8.7 9 7.7 10.8 10.9 9.6 7.7 7.2 6.4 7.3 11.7 8.7 7.1 9.3 9.3

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