Is it appropriate to open windows for ventilation on rainy and humid days?

It is better not to open the windows in humid weather.

Generally speaking, it is recommended to close windows in humid weather, although in humid weather, the air contains more water vapor than usual. However, the moisture content indoors is still less than that outdoors. Opening windows can easily cause outdoor air to flow into the room, causing the indoor humidity to increase.

After closing the windows, the circulation of internal and external air can be prevented to a certain extent, thereby reducing indoor moisture, and preventing the human body from developing rheumatic diseases such as arthritis due to moisture infection. In addition, it can also prevent indoor food and clothing from becoming moldy due to exposure to excessive moisture.

Causes of humid weather

1. We will find that if humid weather occurs, it usually occurs when it continues to rain. Before it rains, the water vapor content in the air is relatively high. Coupled with the lack of sunlight, the water vapor in the air cannot be completely dissipated. When it reaches a certain level, it will make us feel extremely wet and uncomfortable.

2. Another reason for wet weather is that the water in the foundation soil under the ground cushion rises, causing water vapor to penetrate upward, making the ground damp.