Niiskusvahemik

Niiskusvahemik refers to a range of relative humidity that is necessary for human comfort. It is generally considered to be between 40 and 60%. At this range, the body can lose moisture through evaporation, and the air is not too dry or too humid to cause discomfort.

In cooler temperatures, the ideal relative humidity is often closer to 30%, whereas in warmer temperatures, it is closer to 70%. However, these values are not as universally accepted as the 40-60% range.

At lower relative humidity levels, people can experience discomfort due to dry skin, nosebleeds, and other respiratory issues. On the other hand, high relative humidity can lead to mold growth, increased susceptibility to respiratory infections, and a general feeling of misery.

Maintaining an indoor relative humidity within the ideal range can help prevent damage to books, wood, and other materials that can shrink, crack, or become discolored when exposed to low or high humidity levels.

Some people use devices like humidifiers and dehumidifiers to control indoor humidity and maintain their preferred environment. However, adjusting the humidity levels can be a complex process, as it is also affected by factors like air conditioning and heating, ventilation systems, and the building's construction materials.

In many Western societies, heating and cooling systems are designed to maintain a relatively dry indoor environment, which can result in low relative humidity levels, often below 30%.