What are the solutions for foggy car windows on rainy days?
2 Answers
The solutions for foggy car windows on rainy days are: 1. Turn on the car's air conditioning system to cool and direct cold air onto the foggy glass; 2. Mix detergent with water and apply it to the outside of the car window with degreasing cotton or a clean, soft cloth; 3. Open the sunroof or window to allow indoor air to circulate; 4. Install a window heating and defogging function. The reasons for foggy car windows are: 1. The temperature of the car glass is lower than the dew point temperature; 2. There is a significant temperature difference between the inside and outside of the car. The functions of car windows are: 1. To shield from wind and rain, and to reduce noise; 2. To lower wind resistance and guide airflow; 3. To protect the safety of the passengers in the car.
Having driven for many years, foggy windows on rainy days are all too common. The key solutions are dehumidifying and adjusting temperature differences. The most effective method is turning on the air conditioning, pressing the defog button or directing cold air straight at the glass to quickly evaporate moisture with the cold air. In winter, using the heater also works, but make sure to switch to the external circulation mode to draw in dry outside air and prevent new fog from forming. Opening the windows slightly for ventilation—just a crack to keep the rain out—can provide immediate relief. Keeping a microfiber cloth or anti-fog spray in the car is also handy; applying and wiping it off can prevent fogging for several days, saving time and effort. I always emphasize safety first: don’t panic when fog appears, address it immediately to ensure clear visibility, and maintain a habit of cleaning the windows regularly to reduce grime buildup, which makes fogging more likely. These simple, practical tips can be combined for best results.
