Clear Vision: How to Prevent Car Windows from Fogging in Rain

In the rain, foggy automobile windows are a common occurrence. Not only is this annoying and unsettling, but it could cause a car accident if you keep driving with it. Is wiping the screen with the wiper blades anything you’ve considered yet?

What Cause Car Windows To Fogging Up In The Rain?

Fogging of windshields and other windows is most commonly caused by condensation on the inside of the windows. There is zero correlation between the outside windows and the condensation. For this reason, when driving in foggy conditions, turning the wiper blades will not help.

When the relative humidity within the vehicle is high, condensation forms; when the inside temperature is higher than the outside temperature, fogging of the windows develops. While parked in the rain, your car’s windows may become foggy.

You should not be surprised by this. The effect is the same as adding ice to a glass of water. As soon as you fill a glass cup with cold water, it will begin to fog up until the water reaches a specific temperature. Your car’s windows are no exception. Upon the arrival of cold air inside the vehicle, the condensation will evaporate.

How Do I Stop My Car Windshields From Fogging Up When It Rains

Use heat to defog vehicle windows. On the other hand, if you prefer to drive with air conditioning all the time, it’s perfect for researching heatless methods to prevent windshield fogging.

When the inside temperature of the cabin is higher than the outside temperature, condensation forms on the windshield and windows. To remove this condensation, simply turn on the air conditioner.

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To speed things up, use an inside-facing, clean, dry, and lint-free towel to wipe the windows before you switch on the air conditioner. Various vehicles are equipped with a variety of features. Most cars include air vents that let you blow cool air onto the windshield, making defogging a breeze. The defogging process will be greatly sped up by doing this.
Whether you’re driving in the summer or winter, this is the perfect solution for defogging your windshield. But what if the windshield defogger isn’t working? It’s possible that the oil and moisture have combined to create an unsightly stain on the windows.

The question “where is the oil from?” is on your mind, and I know it. Minimal oil should be present in the air freshener or upholstery and dashboard cleaning products. In really hot or cold weather, these oils can condense on the windows and fly out the car.

Cabin dirt can also cause oil to evaporate on windows. If that’s the case, you can clean the windshield by rubbing some soda or alcohol on a clean towel. Then, switch on the air conditioning.

How To Keep Car Windshields From Fogging Up In The Rain

Now that we know why rain causes automobile windows to fog up, we can look at ways to stop the fog from even starting. Prevention is always preferable to treatment, as the old adage says. Avoid having your vision hindered by fogs while driving by taking the required measures to keep the windows from fogging.

Keeping the windows clean at all times is the greatest approach to reduce fogging. The rate of fogging is accelerated by oil particles and grime on the glass. To avoid fogging, you should regularly wipe the windows with water and a dry towel.

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While washing the windows is routine, using anti-fogging treatments can provide a more permanent solution. You can get a number of anti-fog products in stores. Car Interior Glass Anti-fog is my top pick if you’re short on time but still want the best quality.


It is common for car windshields to fog up when it rains. This article has covered the reasons, ways to avoid it, and methods for keeping rain from fogging up automobile windows.

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