Guiyang releases air quality assessment results in July

The air quality assessment results for July in Guiyang, capital of Southwest China's Guizhou province, were released on July 13, and Kaiyang county was the city's best performer.

The rankings are as follows, from best to worst: Kaiyang county, Guiyang National High-tech Industrial Development Zone, Xifeng county and Xiuwen county (tied), the Guizhou Shuanglong Airport Economic Zone, Baiyun district, Wudang district, Qingzhen city, Huaxi district, Guanshanhu district, the Guiyang Free Trade Zone, Yunyan district, Guiyang Economic and Technological Development Zone, and  Nanming district.

According to the evaluation results and the national standards for ambient air quality, all districts and zones in Guiyang enjoyed good air quality every day in July. And the main pollutant of each county and district is ozone.