How to defog windshield in summer humidity. Use your defrostif you can stand the blast of heat use your heated defrost to balance out the temperature of your glass in your car. If the condensation is on the outside of your car windshield wipers should do the trick to get rid of the fog for the time being. You can wipe the inside if you want but that will leave streaks and wont accomplish much in the long.
You can also use the heater to handle the fog in a more comfortable fashion if you dont have an emergency. Use your fans medium speed to allow the air more time to warm and dry before its directed at the windshield. What to do when its hot and humid outside.
Set the temperature to the lowest position. Try to turn off the air conditioning inside car turn on the wipers of windshield or turn the temperature inside to be low. If the ac does not automatically turn on manually turn it one.
You will want the air vents focused on blowing hot air over the windshield. You can open the window as well to quickly defog your windshield. Set the fan speed to the highest position.
Set the floordefrost or the defrost position. Turn on the ac or defrost without heat andor open up the windows to dissipate moisture. Skip the recirculate feature if you have it.
Turn your air conditioning down. Make sure you have set your vents to the defrost setting too as this will preferentially direct air at the windshield. Use a clean dry rag to wipe it off.
How to defog windshields in the winter. This method manages the moisture inside the vehicle. Spray a small amount of cream onto a soft cotton cloth and spread it over your entire windshield.
The ac will now turn on. Apply shaving cream to your windshield. If your car doesnt have ac make sure you are allowing air from the outside into your car.