Relationship between smog and weather temperature

The temperature is related to smog. The lower the temperature, the less water vapor can be contained in the air, and the easier it is to form smog.

When the suspended water vapor in the atmosphere condenses and the visibility is lower than 1000 meters, it is called fog in meteorology. When the water vapor contained in the air reaches the maximum, saturation will occur. If the water vapor exceeds saturation, the excess will condense out and combine with tiny dust particles in the air to form small water droplets or ice crystals, which will be suspended in the air layer near the ground and become fog. On a foggy day, the air mobility is poor. Sulfate, sulfur dioxide, air pollutants, various bacteria and viruses contained in smog components are easy to invade the human respiratory tract, reduce the defense function of the human respiratory system, and cause discomfort such as poor breathing, chest tightness, dry cough, dry throat and itching. Long-term inhalation is easy to cause rhinitis, pharyngolaryngitis and bronchitis, and it is also easy to cause acute attacks of chronic diseases such as asthma, chronic bronchitis and chronic obstructive pulmonary disease.

Fog weather often occurs. If we don't pay attention to prevention, the pollutants in smog will stimulate the respiratory tract and induce upper respiratory tract infection, asthma, allergic rhinitis, chronic bronchitis, cardiovascular and cerebrovascular diseases and so on.