How to Solve Fogging on the Outside of Car Windows on Rainy Days?
4 Answers
Fogging on the rear window after rain can be addressed using the following methods: 1. Air Conditioning Cooling for Defogging: The main causes of window fogging are low temperature and high humidity. Using the air conditioning cooling function can remove fog from the front windshield. However, if the humidity inside the car is too high, the effect may not be very noticeable. In such cases, slightly opening the windows can quickly reduce interior humidity. 2. Window Ventilation for Defogging: Opening the windows allows cold and hot air to circulate. If the fogging is not severe, slightly opening the side windows can create air convection inside the car, gradually equalizing the interior temperature with the outside temperature and dispersing the fog. The advantage is that it achieves the same effect as using the air conditioning without increasing fuel consumption. During extreme cold or rainy conditions, intermittently opening and closing the windows is recommended. This method is not suitable for severe fogging. 3. Anti-Fog Spray: Applying glass anti-fog spray forms a transparent hydrophobic ion film on the glass surface, preventing water droplets and fog from condensing. 4. Anti-Fog Cloth: When fogging occurs, wiping the windows with an anti-fog cloth can prevent further fogging, achieving the same effect as anti-fog spray. 5. Detergent-Based Anti-Fog Solutions: Mixing dish soap with water in a ratio of approximately 1:10 and applying it to the inside of the front and rear windshields with a cotton swab or soft cloth can prevent fogging. Alternatively, mixing household shampoo or body wash with water in a similar ratio and spraying it on the windows before driving can also prevent fogging.
I've encountered the issue of fogging on the outside of car windows when it rains many times, and dealing with it is quite simple. The most basic solution is to immediately turn on the wipers—a few swipes can remove most of the condensation. If the wipers are worn out, they should be replaced promptly. On rainy days, the air is particularly humid, and when the outside temperature is low, condensation easily forms. At this point, turning on the air conditioning's defogging mode is very effective—lower the temperature to dry the air and increase the airflow toward the windows. I always keep my car windows clean while driving, regularly using window cleaner to wipe the glass to prevent oil buildup that worsens fogging. If the fog persists, I check whether the external air circulation is on to avoid trapping moisture inside with the internal circulation. Safety is crucial—don't take it lightly. Foggy windows can blur visibility and lead to accidents, so reduce speed slightly and maintain a safe distance while driving. This approach saves time and is highly effective.
Fogging on the outside of car windows during rainy days is primarily caused by moisture condensing on cold glass, and the countermeasures are straightforward and efficient. Turn on the front wipers to quickly clear the fog layer, while adjusting the car's air conditioning settings—lower the temperature and activate the defogging function to direct dry, cold air toward the exterior glass. I make it a habit to check the wiper blades for wear or deformation before rain, as keeping them clean helps prevent water vapor buildup. If the fog is particularly stubborn, applying a specialized anti-fog spray to the outer surface of the glass can create a barrier film to reduce condensation. On rainy days, I also pay attention to not driving too fast, as fogging can obstruct side and rear visibility. Deal with it promptly to avoid distractions and ensure driving safety.
Fogging on the outside of car windows is common on rainy days, and I take immediate action to resolve it. I turn on the wipers to clear the fog and activate the air conditioning's dehumidification mode, directing airflow toward the windshield. The root cause of fogging is cold, moist air coming into contact with the cool glass, so I keep the air conditioning temperature moderate and increase the fan speed to accelerate dry air circulation. Daily prevention is crucial—I regularly clean the windows, using a soft cloth to remove dust and oil stains that could otherwise absorb moisture and cause fogging. Wipers also need proper maintenance; if they show cracks, I replace them promptly. This way, I can quickly and effectively handle fogging while driving, preventing accidents caused by obstructed vision. Rainy days already mean slippery roads, so extra caution is essential.
