How to Clear Fog from a Car’s Windshield?

To drive a car, you must always be able to see where you’re going. When going on the road, simple things like fog, mist, and condensation can make it hard to see. If drivers know easy maintenance tips and tricks, they can stay alert on the road and not worry about their vision getting blurry. It’s already dangerous to drive in the rain or cold, and a foggy windshield will only make things worse.

What makes a windshield foggy?

You can’t drive safely with a foggy window because you need to be able to see everything on the road. If you know why your windshield fogs up, you can choose the right way to clear it.

A. Temperature

When the temperature inside and outside the car is different, the glass often fogs up. In the summer, fog happens when hot air from outside hits the window and is then cooled by the car’s air conditioning. In the winter, fog forms when cool air from outside hits a warm window.

B. A dirty window

When dirt, dust, and other things are on the glass, it will draw in water. If the windshield is already dirty, the change in temperature will make it fog up even more.

C. Mechanical issues

A foggy window can sometimes be caused by problems with the cabin filter. This cabin filter is in a lot of cars made after 2000. It gets rid of dust, pollen, and other pollutants to keep the air quality in the house high. This filter changes how your car’s heater and air conditioner work. Too much dirt in the car filter can make the defroster not work as well. Because of this, the air quality will get worse, and the window will fog up more.

How to Clear Your Windshield in the Winter?

To keep driving safely, you need to know how to clear fog from your car. As part of regular car care, you should clean your car and its filters often. But the difference in temperatures changes quickly, so you need to know simple things you can do to keep from fogging up while driving.

Here are some things you can do to keep your window from getting foggy when you are driving:

1. Turn the heat up

When it’s cold outside, you want the inside of your car to be nice and warm. So, if you turn up the heat in your car, you’ll stay warm. It will also keep you from getting fogged up, since hot air can hold more water than cold air. Moisture will gather in the car’s hot air, which will keep it from getting on the glass. This will keep fog from forming as much in cold weather.

2. Turn on the air-conditioning

You could also turn off the heater and turn on the air conditioner instead. The cooling coils of the air conditioner will pull moisture out of the air and into the air. This will reduce the amount of wetness inside the car and on the windshield.

3. Stop air recirculation

Bringing the car’s temperature up to the same level as the weather outside is another quick way to get rid of fog. If you stop the air from moving, cold, dry air will get into your car. The dry air will also soak up moisture, which will help keep the window from misting up.

4. Open the windows

If fogging is making it hard to drive, crack the windows just a little. The steamy air inside the car will be replaced by cold, dry air from outside. When wetness is taken out from the inside, fogging can be lessened.

How to Clear Your Windshield in the Summer?

Fogging can also happen when the temperature outside is higher. To drive safely and comfortably when it’s hot outside, you need to know how to clear fog from the window.

Here are some easy ways to clear up a foggy window quickly:

1. Use the windshield wipers

Use the wipers quickly to get rid of the moisture on the outside of your window.

2. Turn the air conditioner off

You might want your car to be nice and cool in the summer. But this change in temperature can make more fog. By turning the air conditioner down, you can raise the temperature inside your car. Turning off the air conditioner for a while is a better and faster way to do it.

3. Stop the air from coming back in

Turn off the air flow in your car in the summer to keep cold air from coming in. The temperature outside and inside will soon be the same, which will make it less likely for the glass to fog up.

How to Keep a Windshield from Getting Foggy

It’s important to try to stop the windshield from fogging up, and anyone can take a few simple steps to make the windshield less likely to fog up. Simple windshield repair tips you can do at home can help a lot when driving in bad weather.

Tip #1: Use ammonia-based window cleaner

Choose an ammonia-based window cleaner for your glass when you clean your car. Use this cleaner on the inside of the glass to keep it from getting foggy. Use the cleaner in either a horizontal or a vertical motion to get rid of the dirt and dust. Use it often to prevent fogging.

Tip #2: Put shaving cream on the window

Leaving a thin layer of shaving cream on the windshield is a popular way to keep mist and fog from forming. This keeps water from getting through, so water molecules don’t stick to the glass. Take some shaving cream or shaving foam and spread it all over the inside of the glass with a clean, dry towel. Then, take another dry towel and rub the inside of the window to get rid of any shaving cream that is still there. When you are done, you shouldn’t be able to see any shaving cream on your window. But a thin protecting film will stay on, which will keep fogging from happening.

Use the defroster to get warm.

Use a defroster to warm up the inside of your car. If you want to drive on a cold morning and use a remote starting, set up a defroster the night before so that the windows don’t fog up while you’re driving.

Tip #4: Instead of recycling, use the fresh air mode

Use the fresh air setting on your car’s air conditioner. This will stop the recirculation of air, which keeps moving wet and humid air around the room. Bringing in fresh air from outside will keep the temperature stable and keep the glass from fogging up.

#5: Crack a car window

If you keep a window open while moving, the car won’t fog up.

Tip #6 Keep shoes dry

If you walk across a floor that is wet or covered in snow, the dew will stick to your shoes. If you wipe your shoes dry with a cloth before getting in your car, less water will get inside. This easy step can help keep your windshield from getting foggy.

Tip #7: Check the HVAC system often

The Heating, Ventilation, and Air Conditioning (HVAC) system in your car is needed to keep the temperature inside at a comfortable level. If the HVAC system breaks, it can cause a big difference in temperature, which can make the glass fog up. Hire a professional to clean and fix your HVAC system so you can check it regularly. If your glass fogs up when you turn on the defroster, it’s time to clean and fix your HVAC system.

How to Stop the Car from Getting Damp?

When you are in a hurry in the morning, you don’t have time to set the heat or air conditioning in your car. To change the temperature settings quickly while moving, you must do a few things quickly. But you can stop wetness from building up overnight so you don’t have to spend a lot of time cleaning the fogged-up windshield in the morning.

What makes the car get wet inside?

The temperature difference between the inside and outside of your car is the most common cause of fog. This happens more and more often with older cars. During the winter, the warm air inside the car hits the windshield, which is then cooled by the air outside. It will lead to fogging and humidity. When you de-ice your car or use the defrost feature, the glass can often fog up.

How to Stop My Car from Getting Damp?

If you clean your windshield with a cleaner that is meant to keep it from fogging up, the fogging won’t happen. These cleaners leave a thin layer of protection on the inside of your window so that water won’t stick to it directly. A lot of commercial cleaners work well to get dirt and other things off the glass. Always use a clean, dry microfiber cloth to wipe away any leftover cleaner.

Don’t bring wet things into the house

Any wet things in the car will definitely make condensation worse. If you have wet shoes, towels, rags, or umbrellas in the car, they will release wetness into the air as they dry. If the inside of your car is damp, more condensation and mist will form on the glass. Don’t leave wet things in your car overnight because the wetness can cause problems when you drive in the morning.

Get a car moisture absorbent

Leaving the car open for a few hours is the best way to dry it out. During the summer, this will work great. But this choice isn’t possible in the winter. You can keep the inside of your car dry with a professional moisture absorber. With silica gel, you can make things that soak up water.

Use a DIY car moisture absorber

If you don’t want to buy commercially made ones, you can make your own. For example, cat litter in a sock or tights is a great way to soak up moisture in a car. You can also buy silica gel pellets and keep them in your car to soak up moisture.


If it’s cold almost all the time, getting a heated windscreen is a great way to keep your windscreen from getting dirty. Putting on the air conditioner and opening the windows will also help. How to get rid of fog in a car relies on what the weather is like outside. To stop dirt and waste from causing moisture to build up, the HVAC system needs to be cleaned and serviced regularly.

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