Can I open the window when the humidity is 86?

Generally, the indoor humidity is 40 to 60. You can open the window for a long time in spring, summer and autumn, but you should avoid convective winds. You can also open the window for a short time in winter, but you must control the time. It is best not to open the window in rainy days.

When the weather is wet, many people will choose to close the doors and windows to prevent moisture from flowing in, but the indoor air is no longer circulating, which may easily lead to the growth of bacteria. The humidity of the air is the highest in the morning and at night. It is not recommended to open windows in large areas during this period. But if you want to open a window, you can choose to avoid the window facing south or southeast. In the south, there is more moisture in these two directions. In addition, in the afternoon or when the weather turns fine, the humidity is relatively low, so you can choose to open the window for ventilation during this time to blow away the humidity.