(Yicai Global) Dec. 11 -- The average PM2.5 concentration in 28 northern Chinese cities was down 22.6 percent on the year between October and November, the Ministry of Environmental Protection posted on social media today.
The average concentration of PM2.5 in China's '2+26' cities ranged between 52 and 87 micrograms per cubic meter at a median of 65, the ministry said. The cities are based around the Beijing-Tianjin-Hebei region and include two municipalities, Beijing and Tianjin, and other cities across Hebei, Shanxi, Shandong and Henan provinces.
PM2.5 is particulate matter with a diameter of less than 2.5 micrometers.
Beijing, Langfang and Jining trumped the list in terms of lowest average concentration, while Handan, Xingtai and Shijiazhuang had the highest values. PM2.5 dipped across all the cities, falling 44.8 percent in Shijiazhuang, 43.5 percent in Beijing and 42 percent in Baoding.
Last month, the average concentration dived 37 percent on the year to 68 micrograms per cubic meter, with Tianjin replacing Jining in the three cities with the lowest PM2.5 values. Handan, Anyang and Kaifeng were the biggest pollution producers at 91, 89 and 81 micrograms per cubic meter, respectively. The concentration dived 54.1 percent in Shijiazhuang, 54 percent in Beijing and 42 percent in Tianjin.
Over October and November, 20 of the cities were on par with their emissions reductions targets, but Handan, Jincheng, Jining, Heze, Kaifeng, Puyang, Changzhi and Zhengzhou are all behind schedule. Forecasts suggest that China could see a warm winter this year, which will see authorities nationwide tighten policies and take more pertinent measures to curb smog in line with air quality improvement targets, the social media post said.