A foggy windshield can be annoying, but more importantly, it can also be dangerous when driving. If your windshield fogs up, you have several options to try to clear away the fog. If you're not finding success with these tricks and tips to fix a foggy windshield, be sure to pull over when safe to deal with it or call for help. Do not continue to drive with a foggy windshield, as it poses a danger to yourself and others.