During the winter season, the home windows fog up a lot and you have to wipe them almost every morning. The same happens because of the considerable difference between the temperature inside the house and the outdoors. The fogged up windows suggest that there is excess moisture in the air indoors. This excess moisture comes from the daily household activities like cooking, bathing and dish-washing. This warm and humid air when comes in contact with the cold, glass home windows, the condensation process occurs and the excess moisture gets deposited on the windows, thereby making them foggy.
