How to Remove Window Fog on Rainy Days?

2 Answers
VanKing
07/24/25 8:29am
Methods to remove window fog on rainy days: 1. Turn on the hot air, blowing hot air can help defog the windows, and you can also turn on the external circulation of the air conditioner and set the air outlet to defog mode; 2. Use anti-fog spray, which coats the glass with a protective film, making it less likely to fog up on rainy days; 3. Open the windows slightly when the front windshield fogs up, allowing outside air to blow in, which will quickly disperse the fog; 4. Use a cloth to wipe, if opening the windows is too cold or you're worried about rain coming in, prepare a towel and wipe vigorously whenever fog appears; 5. Wipe with dish soap or soapy water, then rinse with clean water and dry, which will prevent fogging, or you can also use glycerin.
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DanielaLee
08/11/25 4:04am
Foggy windows on rainy days are very common, mainly caused by the temperature difference between the inside and outside of the car and high humidity. I usually press the defog button on the air conditioner immediately, turn the fan to the maximum, and direct it at the windshield. Using either cold or warm air works, depending on the weather. At the same time, I slightly open the window for ventilation to quickly balance the humidity. Additionally, regularly cleaning the dirt on the inside of the windows can prevent fog buildup, as dirty glass is more prone to fogging. The air filter should be replaced frequently to ensure effective defogging. Safety comes first when driving in the rain—don’t let fog obstruct your vision and cause danger. The whole process is actually quite simple, and the fog will clear in just a few minutes, but make sure to handle it when parked safely.
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