How to Deal with Foggy Side Windows?
2 Answers
Turn on the maximum cold air (press A/C), direct the airflow toward the windshield, and the fog will be quickly blown away, restoring clear visibility. Direct the airflow toward the windshield. Once the windshield's temperature rises and the temperature difference is eliminated, the fog will clear. Simply spray on a towel and wipe the glass. The effect lasts for about a week. Use the wiper to clean the outside of the window. For the soapy water on the inside, gently wipe it with a tissue until it's semi-dry.
I've seen my fair share of foggy windows, especially during winter commutes when the car interior gets misty as soon as I get in. The reason is simple: large temperature differences combined with high humidity inside the car, possibly due to rainy weather or breath moisture. My go-to solution is turning on the AC first, setting it to cold air mode because cool air quickly dehumidifies and clears fog. Simultaneously, direct the AC airflow toward the windshield and press the defogger button if your car has one. For heavy fog, slightly opening a window helps balance indoor and outdoor air. Remember not to wipe the glass with your hand—it only smears the surface and distracts from driving, which is dangerous. For prevention, I've developed habits like ventilating the car for a few minutes before getting in or keeping a small dehumidifier bag inside. If fogging occurs frequently, it's time to check the AC system—blocked air ducts or dirty filters that haven't been replaced can worsen the problem. Above all, safety comes first: if visibility is severely compromised, pull over to handle the situation before continuing.
