How does air quality affect the weather?

The temperature decreases with the increase of altitude, with an average increase of 100 m, and the temperature decreases by about 0.6 degrees Celsius, which makes the temperature of the lower atmosphere high and the air density low. The low temperature and relatively high air density in the upper layer cause the phenomenon of "top-heavy", the atmospheric stratification is unstable, and it is easy to roll up and down to form convection, which will make pollutants and dust in the air in the lower layer, especially near the ground, move to the upper layer, thus reducing the pollution degree in the lower atmosphere. However, under certain conditions, such as after a cold air, the temperature will rise with the height, which leads to the "top-heavy" air, which is called "inversion" in atmospheric science. The atmosphere where inversion occurs is called "inversion layer". The thickness of the inversion layer can range from tens of meters to hundreds of meters. It covers the ground like a thick quilt. The air can't diffuse upward, and then it spreads downward after "no way out", which aggravates air pollution.