2019年上海市环境空气质量优良天数为309天   2020-01-16

 

Better air quality was recorded in 2019 than in previous years, the Shanghai Ecology and Environment Bureau announced on Wednesday, with the yearly average concentration of PM2.5 particles dropping to 35 micrograms per cubic meter, 2.8 percent lower than in 2018.
The excellent and good rate of the city's air quality index last year reached 84.7 percent, an increase of 3.6 percentage points.
Shanghai had 80 days when air quality was recorded as perfect and 229 days when it was good. There were 48 days of light pollution and seven of moderate pollution.

 

 

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