How many degrees should indoor air humidity be appropriate?

The most suitable atmospheric humidity for human body is about 35%-85%, while the most comfortable atmospheric humidity is generally less than 70%. Because the higher the atmospheric humidity, the worse the mood. Due to the influence of weather temperature, in winter, I personally suggest that the indoor atmospheric humidity should be lower than 70%.

Because in autumn, winter and summer, most people turn on the air conditioner at home, and the atmospheric humidity is generally low and the humidity is too low. After staying for a long time, the skin will be tight and dry, and it is easy to get angry.

Therefore, the indoor atmospheric humidity should not be too low in winter, and it is best to keep it above 60%, because in this atmospheric humidity range, the human body will feel most comfortable.

Extended data:

The higher the temperature of air, the higher its ability to contain water vapor (different from water vapor). Although water vapor can chemically react with some components in the air (such as salt in suspended dust) or be absorbed by porous particles,

But these processes or reactions account for a small proportion. On the contrary, most water vapor can be dissolved in air. Dry air can generally be regarded as an ideal gas, but with the increase of water vapor composition, its ideality is getting lower and lower. At this time, only van der Waals equation can describe its performance.

Theoretically, the statement that "the water vapor in the air is saturated" is incorrect, because the water vapor saturation in the air has nothing to do with the composition of the air itself, but only with the temperature of the water vapor.

At the same temperature, the saturation of water vapor in vacuum is actually as high as that in air. But for the sake of simplicity, people (even in the scientific community) use the words "dissolved water vapor in the air" or "saturated water vapor in the air". We also use these common words in this article.

References:

Baidu encyclopedia-air humidity