What are the solutions for foggy car windows on rainy days?
3 Answers
Solutions for foggy car windows on rainy days include: 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 absorbent cotton or a clean, soft cloth; 3. Open the sunroof or window to allow air convection inside the car; 4. Install a window heating defogging function. The reasons for foggy windows are: 1. The car glass temperature is below the dew point; 2. There is a significant temperature difference between the inside and outside of the car. The functions of car windows include: 1. Protecting against wind and rain, and reducing noise; 2. Lowering wind resistance and guiding airflow; 3. Ensuring the safety of passengers.
Fogging on the windshield while driving in the rain is quite common. I usually start by using the car's air conditioning dehumidification function, turning on the warm air and directing it at the windshield for a few minutes, which works well. If the weather isn't too cold, opening the windows slightly to allow air circulation also helps a lot. Remember to press the defog button—modern cars come with this feature, which is quite convenient. For prevention, I always keep the inside of the windows clean, using glass cleaner to remove grease and avoid heavier fogging. Keeping some desiccants or silica gel packets in the car to absorb moisture also helps. If the fog becomes too thick and obstructs visibility, it's safer to slow down or pull over to deal with it rather than risk driving. Regular maintenance of the air conditioning system ensures it functions properly, especially for older cars, which require more attention. These small tips have worked well for me, making rainy-day driving much more reassuring.
When I drive a new car, I rely on the defog button to solve the fogging issue. Pressing it automatically adjusts the air conditioning's airflow and temperature to blow directly at the windshield, dispersing the fog. Setting the temperature knob in the middle position works best—avoid making it too hot or too cold. Turn on the external circulation mode to let fresh air in, reducing moisture buildup inside the car. Connecting your phone to the car's infotainment system also makes it convenient to check the operation guide. For safety, avoid using high beams when fog appears, as it can worsen the problem. Removing wet clothes or umbrellas from the car is a key step to prevent moisture at the source. Preventatively applying anti-fog spray on the inner side of the glass can keep it fog-free for several days—it's simple and requires no professional tools. Maintaining good habits makes driving more worry-free.
