A foggy car windshield during the winter.

Q. How can I keep my car windshield and windows from fogging up in the winter?

A. Car windows can quickly steam up in winter when moisture in the warm cabin air creates condensation.

More Winter Car Care

To clear a foggy car windshield and/or windows, make sure your climate control system is in fresh-air mode (running it in recirculation mode will cause moisture to accumulate). And although it might seem counterintuitive, you should turn your car's air conditioning on. It will dehumidify the air, which will reduce the chances of a foggy car windshield. Plus setting it to a high temperature should keep the car toasty, too.

Editor's Note: This article also appeared in the November 2018 issue of Consumer Reports magazine.