SZ’s average PM2.5 density reaches WHO target III for 1st time |
2022-07-05
Shenzhen's average PM2.5 density for the first half of the year was 15.3 micrograms per cubic meter, down 3.8 micrograms per cubic meter year on year, reaching interim target III of the World Health Organization (WHO) Global Air Quality Guidelines 2021, according to the Shenzhen Municipal Ecology and Environment Bureau last week.