How to Deal with Foggy Windows in the Car on Rainy Days?

2 Answers
DelRonan
07/28/25 9:19pm
The solutions for foggy windows in the car on rainy days are: 1. Turn on the car's air conditioning system to cool and direct the cold air towards the foggy windows; 2. Mix detergent with water and apply it to the outside of the car windows using degreasing cotton or a clean, soft cloth; 3. Open the sunroof or windows to allow air convection inside the car; 4. Install window heating and defogging functions. The reasons for foggy windows in the car on rainy days are: 1. The temperature of the car windows is lower than the dew point temperature; 2. There is a significant temperature difference between the inside and outside of the car. Precautions for driving on rainy days or through waterlogged sections: 1. Be extra cautious if the water depth exceeds the front bumper; 2. Do not continue driving if the water depth exceeds the engine hood; 3. Avoid driving at high speed through ditches or puddles; 4. Maintain a sufficient safe distance.
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LaDiana
08/12/25 1:58am
Fogging up the car on rainy days is really annoying. As an experienced driver, I've seen this issue many times. Fogging mainly occurs when warm air inside the car meets the cold glass, causing moisture to condense. High humidity makes it more likely to happen. The most straightforward solution is to turn on the AC: rotate the knob to the windshield defogging mode, press the A/C button to dehumidify, and the cold air will quickly clear the fog. If your car has a defog button, don't hesitate—just press it. Ventilation is crucial; cracking the windows slightly or switching to fresh air mode can help balance humidity and reduce fogging. For regular maintenance, wipe the inside of the windows and apply some anti-fog spray or diluted dish soap for excellent anti-fog effects. Safety is paramount—if fog severely obstructs your vision, pull over safely to address it. Driving in the rain is already risky, so prevent fogging by keeping the interior dry and avoiding wet floor mats.
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