[Comprehensive] Expert: Chongqing, the recent bad air quality is recommended to wear a mask

On January 3, the Municipal Meteorological Observatory issued the first “yellow-yellow warning signal” for this year in the city. It is expected that from the 20th to the 5th on the 5th, the main city’s 9th district will have a visibility of less than 3,000 meters. The Municipal Meteorological Observatory predicts that over the next three days, rainy weather will dominate the city. Although there are weak rainfall processes in the central and eastern regions, the meteorological conditions are not conducive to the proliferation of atmospheric pollutants.

The monitoring data showed that at 14:00 PM on the 3rd, on the 3rd, at 17 PM2.5 monitoring stations in the main city, 13 stations monitored PM2.5 concentrations exceeding 200 μg/m3, and 4 sites were slightly below 200 μg/m3. The average concentration of PM2.5 in the main urban area is 208 μg/m3. In most areas, the humidity is between 70-80%, and in the morning in parts of the west, the visibility is less than 1,000 meters.

According to data from the monitoring center of the Municipal Environmental Protection Bureau, the concentration of PM2.5 in the main urban area was 130 μg/m3 on January 1 and 128 μg/m3 on the 2nd. From the 1st to the 3rd, the air quality index (AQI) in the main urban area of ​​our city was between 170-194, which was moderately polluted.

"This is related to the city's recent quiet weather conditions." Liu Yi, chief forecaster of the Municipal Meteorological Observatory, explained that the surface wind speed is small and the atmosphere is stable, which is not conducive to the transmission and diffusion of pollutants.

The Municipal Meteorological Observatory predicts that over the next three days, rainy weather will dominate the city. Although there are weak rainfall processes in the central and eastern regions, the meteorological conditions are still not conducive to the spread of atmospheric pollutants. According to the air quality forecast jointly issued by the Municipal Environmental Protection Bureau Monitoring Center and the Municipal Meteorological Observatory, the city will experience mild to moderate pollution in the next three days, of which the primary pollutant is PM2.5.

To this end, the Municipal Meteorological Observatory issued yesterday the first “Yihuang Warning Signal” for this year in the city. It is expected that from now on till 20:00 on the 5th, Yuzhong District, Jiangbei District, Shapingba District, Dadukou District, Jiulongpo District, and Southbank District In the Yubei District, Banan District, and Beibei District, there will be plutonium with a visibility of less than 3000 meters. It is understood that this is also the third time in the past three years, the Municipal Meteorological Observatory has issued the "Yellow and Yellow Warning Signal" for the seventh time.

Experts reminded that due to the recent poor air quality, the public can carry out appropriate protection by wearing masks and other measures. Children, the elderly and sensitive people can moderate outdoor activities.