How to Remove Fog on the Outside of the Windshield?
3 Answers
Here are the methods to deal with fog on the outside of the car's front windshield: 1. When there are water droplets on the outside glass. Adjust the air conditioning temperature slightly higher, set the vents to avoid blowing directly on the glass, and use the windshield wipers with washer fluid to promptly address the issue of water droplets forming outside. 2. When fog forms inside the car. If this occurs during summer after rain, immediately turn on the air conditioning in cooling mode and adjust it to blow air onto the front windshield to quickly disperse the fog. If fog forms inside the car during winter when temperatures are generally lower and the cooling effect of the air conditioning is slower, it is best to immediately open the windows to resolve the fog more quickly. Using the air conditioning in heating mode can also remove fog, but this method is slower and may cause more fog to form on the side windows, affecting driving safety and is not recommended. Additional information: 1. When the temperature inside the car is low and the outside temperature is high, you may notice water droplets forming on the outside glass where the air conditioning blows. This is due to moisture in the air condensing into droplets when it meets the cold surface, similar to how condensation forms on air conditioning units. 2. When the outside is cold and the inside is warm, fog forms very quickly, which is a situation drivers fear the most. This is also caused by moisture in the car's air condensing into small droplets when it meets the cold glass.
I've encountered windshield fogging on the outside many times, especially on rainy nights or cold days when cold outside air meets warm glass, causing condensation and fog formation. The quickest way to remove it is to use the windshield wipers to swipe it away, as the washer fluid can dissolve the fog; if it's not effective, there might be oil film or dust on the glass, so gently wipe it clean with a soft cloth after parking. Turning on the car's defrost mode and adjusting the airflow to the outside of the windshield can also help clear it. For prevention, I make it a habit to regularly clean the glass and use anti-fog spray to maintain clear visibility while driving and avoid risks. Fogging occurs more frequently with drastic weather changes, so remember safety first and stay focused.
Last time when I drove early in the morning, the windshield fogged up on the outside. I quickly operated the wipers a few times, and the fog dispersed soon. When there's a large temperature difference, the cold outside air contacting the hot glass causes condensation. Besides using wipers, turning on the car's AC to blow cold air toward the outside of the glass or using the defrost function can help remove it. If the fog is too heavy, simply wipe it dry with a towel or tissue after parking. From a safety perspective, ensure clear visibility before starting to drive, and don't let fog affect your vision and cause accidents. Regular maintenance of the glass and avoiding residue stains are also important.
