PPE

expert: the air quality in Chongqing is poor recently, so it is recommended to wear masks

On Januar3, the city meteorological station issued the city’s first “haze yellow warning signal” this year. 1t is expected that haze with visibility less than 3000 meters will appear in 9 districts of the main city from now to 20:00 on the 5th. The city meteorological station predicted that in the next three days, the city will be dominated by overcast and rainy weather. Although there is a weak rainfall process in the central and eastern regions, the meteorological conditions are not conducive to the diffusion of air pollutants< According to the monitoring data, 13 of the 17 PM2.5 monitoring stations in the main urban area monitored PM2.5 concentrations of more than 200 μ g / m3, and 4 stations slightly lower than 200 μ g / m3 at 14:00 on the 3rd. The average PM2.5 concentration in the main urban area was 208 μ g / m3. The humidity in most areas is between 70-80%, and the visibility in some western areas is less than 1000 meters in the morning< According to the data from the monitoring center of the Municipal Environmental Protection Bureau, the concentration of PM2.5 in the main urban area was 130 μ g / m3 on January 1 and 128 μ g / m3 on Januar2. And the air quality index (AQ1) of the main urban area of our city from January to march was between 170-194, which belonged to moderate pollution “this is related to the recent stable weather conditions in our city.” Liu Yi, chief forecaster of the municipal meteorological station, explained that low ground wind speed and stable atmosphere are not conducive to the transmission and diffusion of pollutants according to the forecast of the municipal meteorological station, in the next three days, cloudy and rainy weather will prevail in all parts of the city. Although there is a weak rainfall process in the central and eastern regions, the meteorological conditions are still not conducive to the diffusion of air pollutants. According to the air quality forecast jointly issued by the monitoring center of the Municipal Environmental Protection Bureau and the municipal meteorological station, in the next three days, the main urban area will encounter mild to moderate pollution, of which the primary pollutant is PM2.5 for this reason, the municipal meteorological station yesterday issued the first “haze yellow warning signal” of this year in our city. 1t is estimated that haze with visibility less than 3000 meters will appear in Yuzhong District, Jiangbei District, Shapingba District, Dadukou District, Jiulongpo District, Nan’an District, Yubei District, Banan District and Beibei District from now on to 20:00 on the 5th. 1t is understood that this is also the seventh time in the past three years that the municipal meteorological station has issued the “haze yellow warning signal” experts remind that due to the poor air quality in the near future, people can wear masks and other measures for appropriate protection, while children, the elderly and sensitive groups can reduce outdoor activities

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