Excuse me, who knows the application of humidity in all aspects, why the concept of humidity should be introduced into meteorology, and what is the use?

Humidity directly affects people's feelings. As important as temperature.

It is also 30 degrees, and 80% humidity will make you feel sticky and uncomfortable.

50% is much more comfortable.

Specifically:

"Air humidity" refers to the humidity of the air, indicating the degree of water vapor content in the air from saturation, expressed as a percentage of relative humidity. At a certain temperature, the smaller the relative humidity in the air, the faster the water evaporates and the cooler people feel. Humid air is harmful to human body at any temperature. Generally speaking, the humidity in the south is higher than that in the north, and the humidity in the coast is higher than that in the inland. When the humidity is low in winter, people often feel uncomfortable, sometimes their lips are chapped, their nostrils are bleeding, and their throat is dry and itchy. In midsummer season and rainy spring, the air humidity may be as high as 90% or more. Because sweat evaporates slowly, people will feel sultry and breathless, and they will feel unbearable heat, and sometimes they will suffer from heatstroke or cause diseases such as kidney disease, tuberculosis and arthritis.

Modern medical meteorological research shows that the comfortable indoor meteorological conditions are: when the room temperature reaches 25℃, the relative humidity should be controlled at 40%-50%; When the room temperature reaches 65438 08℃, the relative humidity is controlled at 30%-40%. Families with humidifiers should always adjust the indoor humidity so that humidifiers can fully serve your health.