Cities in China have consistently ranked among the most polluted in the world. Just how bad is it? Smart Air analyzed 2020 pollution data from 52 cities in China to find the most polluted cities in in China.
Rankings: Most Polluted Cities in China (2020)
1) Anyang Henan Province (44 μg/m3)
2) Shijiazhuang, Hebei Province (43 μg/m3)
3) Xinxiang, Henan Province (41 μg/m3)
4) Xuchang, Henan Province (41 μg/m3)
5) Tianjin, Tianjin Province (40 μg/m3)
6) Taiyuan, Shanxi Province (39 μg/m3)
7) Zhengzhou, Henan Province (39 μg/m3)
8) Jinan, Shandong Province (38 μg/m3)
9) Xian, Shaanxi Province (38 μg/m3)
10) Fushun, Liaoning Province (38 μg/m3)
Results
Only 1 of the 52 cities (Lhasa, Tibet) had pollution levels below the recommended limits. Four out of the seven most polluted cities were in Henan Province.
Notable Cities
Beijing (33μg/m3) came in as the 11th most polluted city in China for 2020, just missing our rankings.
Although Shanghai was not ranked in the top half of the list, it still averaged air pollution (28μg/m3) levels nearly 3 times the recommended limit.
How Air Pollution Was Measured
There are various pollutants (both particles and gases) that can be found in the air. One of the most commonly tracked pollutants are very small, fine particles called PM2.5.
These small pollutants are under 2.5 micrograms in width and considered to be one of the more dangerous pollutants due to their ability to enter deep into the lungs and bloodstream.
Recommended limits
The limit that is closely aligned to what studies show about the health effects of pollution is the annual limit of 10 micrograms/m3.
Caveats
The year 2020 has been an unordinary year for air pollution. A Smart Air analysis found that air pollution dipped in 2020 around the world partly due to factory shutdowns from COVID-19.
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