What is haze weather?

1, smog weather is a state of air pollution, and smog is a general manifestation of excessive suspended particulate matter content in the atmosphere, especially PM2.5 (particles with aerodynamic equivalent diameter less than or equal to 2.5 microns) is considered to be the "culprit" causing smog weather. With the deterioration of air quality, cloudy days are increasing and the harm is increasing. In many areas of our country, the smog weather phenomenon is combined with fog as an early warning and forecast of disastrous weather. Collectively referred to as "haze weather".

2, Haze, also known as haze, dust, sulfuric acid, nitric acid, organic hydrocarbons and other particulate matter in the air will also make the atmosphere turbid, making the vision blurred and the visibility worse. If the horizontal visibility is less than 65,438+00,000 meters, the visual field obstacle caused by this non-aqueous aerosol system is called haze or dust haze. The difference between haze and fog is that the relative humidity is small when haze occurs, but it is saturated in fog (if there are a large number of condensation nuclei, the relative humidity may not reach 100%, and saturation may occur).