I Can’t See Properly! How To Prevent Your Windshield From Fogging Up During The Rain

When you’re driving, clear visibility is one of the most important safety measures you can take. The windshield has evolved throughout history, from glass slabs to laminated variants and modern, plastic layered sandwiches.

But despite these rapid developments, car manufacturers have not been able to figure out how to prevent windshields from fogging up.



Fogging is a natural process. In cars, it is a result of the differences between the outside and inside temperatures, which leads to moisture condensing on the windows and your windshield.

Driving with foggy windows—especially during rain—is dangerous, due to the already low visibility, pounding rain, and slippery roads. During rainy season, you may end up with foggy windows either on the outside or inside of your windshield. Here’s how you can deal with them:

Fog Inside

If you’re driving around with your windows down on a rainy day, there’s a high chances that moisture will settle down on your windshield. Pulling the windows up and switching on the AC and defoggers simultaneously will keep the air inside your car dry. Keeping the air dry inside is the key to getting rid of the fog naturally.

Fog Outside

When it’s a rainy day—but it’s not raining at that time—the air is filled with moisture. This decreases the temperature of your windshield, allowing moisture to condense on it and turn into fog.
This is especially dangerous if you’re driving on a highway, because you just can’t defog it by simply turning your defogger on.

While turning on the defogger may help sometimes, it is not the solution. Try to regulate the temperature in your car meet the outside temperature by either putting down your windows or running your AC on a moderate yet comfortable temperature.



Here are some other ways to get rid of the fog during a rainy season:

Are you in a hurry? Keep the windscreen wiper and your rear defoggers on. While it may not solve the problem entirely, it might give you some relief.

Moderate the temperature: The real culprit behind a foggy windshield is temperature differences. Park your car on the road for a while and try to match the inside temperature of the windshield from the outside. Switch off your AC and start the defogger with the fan speed on full for 1–2 minutes. This will increase the windshield temperature on both sides.

In addition to keeping a check on the weather and driving carefully, you should also be aware of when to not drive. AAR Auto Glass offers 24/7 windshield repair services in Houston. Get in touch with us to know more about our professional and services. 

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