In humid climates, windows are more prone to condensation, which can lead to mold and mildew growth if left unchecked. Regular window cleaning can help prevent the buildup of moisture and reduce the risk of mold and mildew growth, which can have negative health effects and cause damage to your home or business. Additionally, humidity can cause dirt and other pollutants to stick to the glass more easily, making it important to clean windows more frequently. According to the Environmental Protection Agency, indoor air quality can be up to five times more polluted than outdoor air, so regular window cleaning can also help improve indoor air quality in humid environments.