The Ministry of Environmental Protection recently released the air quality of key regions and 161 cities in the first half of this year including Beijing-Tianjin-Hebei Province, the Yangtze River Delta, the Pearl River Delta, municipalities, provincial capitals and cities separately listed on the state plan. 

Only 9 out of the 161 cities monitored met the new government-set air quality standards during H1 of this year. They were Haikou, Sanya, Zhoushan, Shenzhen, Zhuhai, Zhanjiang, Yunfu, Beihai and Lhasa.

According to the monitoring results, the ratio of days with up-to-standard air quality among the 74 cities ranged between 11.7% and 97.2% with an average of 60.3%. Days with substandard air quality accounted for 39.7% on average.

The new air quality index standards include the density measurements of PM10, PM2.5, sulfur dioxide, nitrogen dioxide and ozone.

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