How to Deal with Fogging Inside the Car During Summer Rain
3 Answers
Solutions for fogging inside the car during summer rain are as follows: 1. Preventive methods like spraying anti-fog agents: Spray a small amount of defogger on the car windows (inner side) and wipe it clean to remove dirt and stains from the glass. While polishing the glass, it forms a thin transparent protective film that effectively prevents moisture from condensing on the glass and forming a fog layer. 2. Air conditioning cooling method: Use the air conditioning's dehumidification function to reduce air humidity and remove fog. 3. Air conditioning warm air method: During summer rain, you can also blow warm air onto the glass to quickly raise the temperature of the front glass, reducing the temperature difference between the inner and outer surfaces of the window. This can promptly prevent excessive fogging on the windshield. However, it should be noted that the rear and side windows heat up more slowly, so it takes longer to completely remove all the fog.
The day before yesterday afternoon, it suddenly started pouring rain. While I was driving home, the car windows fogged up all at once, making it impossible to see anything clearly, and I almost got into danger. I immediately pressed the defog button on the AC, turned the fan icon to increase the speed, directed the airflow toward the windshield, and selected cold air because it cools down quickly and removes moisture. At the same time, I turned on the external air circulation to let fresh air in and replace the damp air inside the car. After a few minutes, the fog cleared up. If the fog is too thick, I would pull over and use a microfiber cloth to wipe the glass. In summer, with more rain and more people in the car breathing, fogging is more likely to occur. So now I’ve developed a habit of leaving a small gap in the window for ventilation after parking to prevent moisture buildup. Regularly cleaning the AC filter is also necessary to avoid mold growth, which can make fogging worse. Safety comes first—when fogging occurs, don’t get distracted while adjusting the AC. Taking it step by step is the most reliable approach.
This situation is actually quite common. When fogging occurs, I immediately turn on the air conditioning system. The specific steps are to increase the fan speed, set the cold air temperature slightly lower than usual, and press the defog button to direct the airflow toward the windshield. The reason for fogging on rainy days is the high external humidity combined with heat from passengers or temperature differences from the AC causing condensation. Using the external circulation mode works better as it reduces moisture buildup inside the car. If the fog doesn't clear, it's safer to find a secure spot to stop and clean the windows. Never manually wipe the windshield while driving for safety reasons. I usually keep anti-fog spray in the car and apply it to the windows every few weeks to help prevent fogging. Additionally, ensuring there are no leaks in the AC ducts and performing regular checks can minimize such occurrences. Staying calm while driving is crucial.
