Condensation forms on glass surfaces when warm, moist air comes into contact with a cooler surface. The air’s moisture-holding capacity decreases as temperature drops, leading to excess water vapor transforming into visible droplets on windows. This phenomenon is frequently observed during colder months when indoor air, often laden with humidity from activities like cooking and showering, meets cold window panes.
Understanding the underlying cause of this condensation is important for maintaining a comfortable and healthy indoor environment. Excessive window condensation can lead to problems such as mold growth, which can negatively impact air quality and building materials. Historically, poor insulation and single-pane windows were common causes. Modern building standards often incorporate measures to mitigate this issue, such as double-pane windows and improved ventilation systems.