Guiyang reports air evaluation results of December

Guiyang, capital of Southwest China's Guizhou province, evaluated the air quality of its districts, county-level cities, counties, and development zones in December and released the results on Jan 12.

The results showed that all the districts, county-level cities, counties, and development zones had good and excellent air quality rates between 83.9 percent and 100 percent. The primary pollutant was PM2.5, and the comprehensive index of ambient air quality was between 3.03 and 3.89.