Why Does the Outside of Car Windows Fog Up in Summer?

[SanHailey]

Here are the reasons why the outside of car windows fogs up in summer: 1. In summer, car fogging is caused by the low temperature setting of the car's air conditioning, which creates a large temperature difference. Additionally, incorrect air conditioning vent direction can contribute to this issue, such as when the vents are directed at the front windshield or the side windows. 2. When this cold air is blown out, it significantly lowers the temperature of the glass area. This cold glass then comes into contact with the relatively high-temperature outside air, and when combined with high humidity, it easily forms a layer of condensation on the outside. Additional Information: The condensation on car windows in summer is different from winter fogging. In summer, the fog mostly forms on the outside of the windows and tends to appear in clusters, rather than covering the entire window surface. This is the biggest difference between summer and winter window fogging.