The ideal humidity level in a room or home generally falls between 40% and 60% relative humidity. This range is considered optimal for comfort, health, and preventing issues such as mold growth or respiratory problems.
- The U.S. Environmental Protection Agency recommends indoor relative humidity between 30% and 50%, with an upper limit of 60% to avoid excess moisture problems
- Many sources, including studies and industry professionals, suggest that 40% to 60% is the best range for indoor humidity, balancing comfort and health benefits
- Levels below 30-40% can cause dry skin, irritation, and respiratory discomfort, while levels above 60% may promote mold, bacteria, and dust mites, as well as discomfort due to heat retention
- Specific rooms may have slightly different ideal ranges, for example, bedrooms and living rooms around 30-50%, bathrooms up to 60% due to moisture from showers
Maintaining humidity within this range helps protect health, preserve furniture and building materials, and improve overall indoor air quality. In summary, aim for 40% to 60% relative humidity in your room for the best balance of comfort and health
