World most polluted cities 2018 (PM2.5)

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2018 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
RankCity2017 AVG2018 AVGJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
1Taiwan
Kaohsiung, Taiwan
27.724.43939.632.123.313.211.710.58.816.93134.233.4
2Taiwan
Tainan, Taiwan
24.923.929.63633.326.816.314.412.710.51830.632.727.1
3Taiwan
Yunlin, Taiwan
26.623.923.632.535.5311816.715.813.720.426.330.124.1
4Taiwan
Kinmen, Taiwan
2723.827.334.532.332.520.215.21317.119.625.622.725.7
5Taiwan
Chiayi city, Taiwan
24.123.726.434.833.729.518.815.714.511.319.426.829.525
6Taiwan
Nantou, Taiwan
26.522.928.929.330.530.1201515.312.817.426.427.222.2
7Taiwan
Changhua, Taiwan
22.821.822.130.331.830.118.91616.213.121.119.723.119.7
8Taiwan
Pingtung, Taiwan
23.321.533.130.225.221.213.911.211.69.216.126.728.831
9Taiwan
Lienchiang, Taiwan
21.220.925.729.525.129.220.514.814.512.316.423.519.519.7
10Taiwan
Miaoli, Taiwan
19.119.617.225.726.828.218.614.714.913.620.118.220.817.1
11Taiwan
Taichung, Taiwan
20.319.218.324.427.226.517.213.915.813.318.217.22216.4
12Taiwan
Hsinchu city, Taiwan
17.818.21525.824.927.31813.113.913.617.91617.516.7
13Taiwan
Taoyuan, Taiwan
17.517.913.524.423.127.119.114.113.715.616.915.415.517.2
14Taiwan
New Taipei, Taiwan
16.915.212.421.52022.220.612.811.112.712.813.212.111.2
15Taiwan
Taipei, Taiwan
15.814.911.319.618.420.519.712.911.714.114.113.412.611.4
16Taiwan
Penghu, Taiwan
15.714.315.922.518.818.310.810.89.18.612.515.514.214.2
17Taiwan
Keelung, Taiwan
15.713.51219.915.918.717.511.910.510.611.612.210.810.6
18Taiwan
Yilan, Taiwan
12.711.810.612.914.416.815.911.910.810.88.910.88.98.9
19Taiwan
Taitung, Taiwan
9.39.39.610.511.711.39.99.28.78.27.39.87.37.9
20Taiwan
Hualien, Taiwan
11.98.89.710.110.211.18.56.96.77.67.79.76.26.8

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