China News Service, Beijing, November 4 (Reporter Ruan Yulin) On the 4th, air quality in Beijing, Tangshan, Qinhuangdao and other cities was polluted. There will be a regional moderate to severe pollution process in Tianjin-Hebei and surrounding areas.

  Monitoring showed that at 9 o'clock on the 4th, air quality in cities such as Qinhuangdao, Jining, Linyi, Dezhou, and Kaifeng was severely polluted, and air quality in cities such as Beijing, Tangshan, Cangzhou, Dalian, Xuzhou, Panjin, Lianyungang, Fuyang, and Yantai was moderately polluted. , The main pollutant is fine particulate matter (PM2.5).

  The China Environmental Monitoring Center issued a reminder of the moderate to severe pollution process. From the 4th to the 6th, the dominant wind direction near the ground in the Beijing-Tianjin-Hebei region and the surrounding area was southerly. Affected by adverse weather conditions such as high relative humidity and regional temperature inversion, the atmosphere spread The conditions are unfavorable, and a regional moderate to severe pollution process is expected to occur.

The main pollution belts are located in central and southern Beijing-Tianjin-Hebei, most of Henan and cities in western Shandong.

  On the 4th, the Jiangsu, Anhui, Shandong and Henan regions were generally well-to-slightly polluted, and some cities in Henan and Shandong had moderate pollution. From the 5th to the 6th, the proliferation conditions in Henan were relatively poor, with moderate to severe pollution.

From the 4th to the 5th, most of the Fenwei Plain area has poor atmospheric diffusion conditions. It is expected that most of the area's air quality will be mainly from good to light pollution, and local moderate pollution may occur.

  The China Environmental Monitoring Station predicts that from the night of the 6th, affected by the cold air process, the diffusion conditions will gradually improve from the northwest to the southeast. By the 7th, the pollution process in Beijing-Tianjin-Hebei and surrounding areas is expected to end.