August 9, 2005 12:06 PM Subscribe
How do I de-fog my car windows on a humid summer night without using my air conditioner?
posted by schoolgirl report to travel & transportation (9 answers total)
Frankly, I'm not even sure the science behind the summer fog-up. Is it the cool yet humid air hitting the warm windshield? Or is the windshield cool and the air warm and humid? I've tried blasting cold air on the windshield, blasting hot air on it, and running with all windows down. Nothing seems to help, so I end up running the a/c, which I'd rather not do (and which itself leads to small areas of condensation on the windshield -- I can't win).