Chongqing will set up 17 monitoring stations in the main urban districts from July 2012 on, to develop real-time monitoring of air pollutants, like PM10, PM2.5 (both are respirable particulates), ozone, etc.
The main urban districts of Chongqing enjoyed 324 high-environment-quality days in 2011. Compared with 1997, the PM10 and sulfur dioxide contents in the air decreased by 33.1% and 81.7% respectively, and the air quality reached the standards for assessing national demonstrative cities. And in 2012, up to the day before, the air quality in urban Chongqing had met the level of 139 high-environment-quality days.
To meet the requirements of the Ministry of Environmental Protection, 3 municipalities and 74 cities, including Beijing, Shanghai, Chongqing and the cities within Beijing-Tianjin-Hebei Area, the Pearl River Delta and the Yangtze River Delta, should complete the test run of PM2.5 “state-controlled stations” by the end of October 2012 and release the monitoring results by the end of December.