Get a free quote plus 10% Off Limited Time Offer!

Get a free quote plus 10% Off Limited Time Offer!


How to Defog Your Car Windshield: The Complete Guide

how to defog your car windsheild

In summer or winter, you can mostly count on needing your wipers or defroster to see clearly before leaving the house. But why do windshields and windows get cloudy in the first place, and how can you properly make them clear again? 

No matter where you live, keeping your car warm might make the windows and mirrors blurry. If you are in a place with cold winters, your car gets warm when using the heater. This can cause fog on the inside of windows. In warm and wet places, using air conditioning (AC) can create another problem – windows becoming foggy from outside. To lessen or get rid of the fog in your car, make sure the inside temperature is close to the outside.

A foggy windshield makes it hard to see and almost impossible to drive safely. Luckily, there are ways to remove ice from windshield quickly.

Understanding Why Your Windshield Fog Up

Before diving into the solutions, it’s essential to understand why your car windshield fogs up. When the air inside your vehicle is warmer and more humid than the air outside, moisture forms on the windshield, causing fog. This is especially common when the temperature difference is more noticeable in colder weather.

Steps to Defog Your Windshield

Here are the 5 essential steps on how to defog windshield.

1. Turn On Defrosters

When you start your car, find the buttons or controls that say “defroster” or have a symbol showing a windshield with wavy lines. Turning on both the front and rear defrosters helps warm up the glass, making the moisture on it evaporate. This warming action clears up the fog on your windshield, giving you a clearer view of the road. Don’t you think that this is the best way to defog windshield?

2. Adjust Air Flow

The buttons or knobs in your car that control the air conditioning and heat can be adjusted to send warm air directly to the windshield. By setting the airflow toward the windshield using these controls (usually found on your dashboard), you can speed up the process of getting rid of fog. This warm air helps to dry up the moisture on the glass.

3. Crack Open Windows

As we are considering how to get rid of foggy windshield. So, if the weather outside isn’t too cold or unpleasant, try opening your car windows slightly. This helps the moist air trapped inside your car to escape, allowing drier air from outside to come in. The exchange of air helps reduce the humidity inside your car, preventing fog buildup on your windshield.

4. Use a Microfiber Cloth

Keep a special type of cloth called a microfiber cloth in your car. When you notice some extra moisture on your windshield, use this cloth to quickly wipe it away. Wiping the glass helps improve your visibility by removing the excess moisture while your defroster works.

5. Consider Anti-Fog Products

People consider this the best way to defog windshield. There are special products made to prevent fog from forming on car windshields. These products usually come in sprays or wipes. When applied to your windshield, they create a thin layer that stops fog from sticking to the glass. These anti-fog treatments are available online or at auto supply stores, and they can be useful for maintaining a clear windshield in humid or foggy weather.

Tips to Prevent Windshield Fog

Adjust the Temperature

Keeping the inside of your car close to the outside temperature can stop fog from forming. Imagine this: if it’s cold outside and warm inside your car, moisture builds up on the glass, causing fog. To prevent this, try to balance the temperature inside your car with the temperature outside. You can adjust your car’s heater or air conditioner to match the outside weather.

Use Air Conditioning

Surprisingly, turning on your car’s air conditioning can help remove moisture from the air inside your car. The AC works to dry out the air, making it less likely for fog to form on your windshield. So, even if it’s not hot outside, using the AC for a bit can help keep the air inside your car dry and prevent foggy windows.

Use Your Car’s Defroster

Most cars have a defroster setting that helps clear windshield fogging up inside. When you turn it on, it warms up the windshield, which helps to get rid of the moisture that causes fog. You’ll usually find this setting among the buttons for your car’s climate control system. A picture of a windshield with wavy lines on it often symbolizes it. 

Keep the Inside of Your Car Dry

When things are wet inside your car, it increases the humidity, which leads to foggy windows. If you do get something wet inside, try to dry it as best as you can. Keeping the inside of your car dry is a simple way to reduce fog buildup on your windshield. Moreover, when facing irreparable damage, car owners often seek professional services for car windshield replacement to ensure safe and clear visibility on the road.

Use Fresh Air Mode

Make sure your car’s cooler or warmer is on fresh air, not the one that uses inside air. Otherwise, your car might use damp or wet air again. This makes it more likely that the windshield will fog up. Foggy car windows can be very dangerous when driving because they may block your sight and make it hard to see the road clearly. If you want to make sure the air in your car is dry without too much extra water, set your HVAC system for fresh air. This can stop moisture from forming on the glass of your car, lessening the risks of seeing fog and making it easier to see when you drive.

Wipe Your Shoes Before Getting Inside Your Car

During cold weather, preventing your windshield fogging up inside becomes crucial for maintaining clear visibility while driving. Use a dry cloth to wipe away any snow or wet dew from your shoes before you get into the car. This lessens the moisture in your car, making it unlikely for a misty windshield. If you have thick fog, it might take a few rounds to clear your car window using this method. If you live somewhere with a lot of fog, it’s smart to buy good windshield wipers and keep them well. This helps your clear view while driving in bad weather.

Additional Tips for Specific Situations

  • Morning Dew: Use a clean cloth or paper towel to wipe the windshield before starting your car. This helps remove external moisture that can contribute to fogging.
  • Rainy Days: Ensure your car’s ventilation system is working correctly. Defog the windshield using the above-mentioned steps, and use windshield wipers as needed.

In the Last

It’s very important to clear the fog from your car window to drive safely. When you learn why fog happens and do these easy things, you can stop and clean off the fog. This will make it safer to see for yourself and other drivers on the roads. Adding these habits to your daily activities can help a lot in keeping the front glass clean, even when bad weather is happening.

On the other hand, autoglass masters are renowned for their expertise and quality service in managing all types of vehicle glass replacements and repairs, guaranteeing clients’ security and contentment.

Remember to keep the inside of your car dry, adjust the temperature, and turn on the defrost setting to get rid of fog quickly. In addition, using a defogger or applying a solution of water and vinegar can provide a long-lasting solution. 


Do you have any concerns about auto glass replacement? Interested in a free quote? Feel free to give us a call today at 888-545-2770 or email us at

Schedule Your Windshield Replacement With Us!!

auto glass masters

Autoglass Master is a locally owned repair and replacement service offering fail-safe solutions for all types of autoglass issues. With affordability, holistic services, and a safety-oriented approach, we provide the utmost feasibility to our clients and ensure they are well served in all regards.

Subscribe Newslatter

Exerci tation ullamcorper suscipit lobortis nisl aliquip ex ea commodo

© 2024 Auto Glass Masters. All Rights Reserved