The ideal humidity level for the home depends on the personal preferences; different people will feel more comfortable at different humidity levels. However, a humidity level that falls between 30 to 50 percent is considered the most comfortable for the average person.

Most people find a relative humidity level between 30 and 50% is most comfortable. To achieve desired humidity levels, many homeowners install portable or whole-house dehumidifiers and humidifiers.

The ideal range of comfortable humidity is between 30% and 60%. Within this range, people feel comfortable, and their health is not adversely affected. Humidity levels below 30% can cause dry skin, dry eyes, and respiratory problems. Conversely, humidity levels above 60% can lead to mold growth, musty odors, and other health issues.

According to the Environmental Protection Agency, indoor relative humidity should be kept below 60%. Ideally, between 30% and 50%. The DOH states that “for thermal comfort, the optimum range for relative humidity is 40 to 60 percent in the summer and 30 to 50 percent in the winter.”

The American National Standards Institute recommends maintaining a relative humidity level of between 30% and 60% in habitable spaces. And it’s for good reason.