Posted on 2/28/2025

A foggy windshield can make driving stressful and even dangerous by reducing visibility when you need it most. Whether it happens due to temperature changes, humidity, or trapped moisture inside your car, knowing how to clear it quickly and prevent it from happening in the first place can keep you safer on the road. The right approach depends on the conditions, but once you understand what causes windshield fogging, you can take steps to keep your view clear in any weather. What Causes a Windshield to Fog Up Fogging occurs when moisture in the air condenses on the glass, creating a layer of mist that can obstruct your view. Several factors contribute to this: Temperature differences – When the inside of your car is warmer than the outside air, condensation forms on the colder windshield. High humidity – Moisture from wet clothing, breath, or even a leaking heater core can increase humidity levels inside the cabin, leading to fog. Recirculated air &ndas ... read more