Check whether an indoor humidity reading is comfortable and healthy.
Relative humidity plus temperature determines the dew point and vapor pressure deficit, which together say whether the air feels damp or arid. Keeping indoor humidity in the 30-60 percent band protects woodwork and health, avoiding both dry-air discomfort and mold risk.
Indoor Humidity Level
Dew point ~ from temperature and relative humidity; comfort = 30-60%
Dew-point approximation is simplified; mold risk depends on surfaces, ventilation and duration.
Dew point ~ from temperature and relative humidity; comfort = 30-60% Relative humidity plus temperature determines the dew point and vapor pressure deficit, which together say whether the air feels damp or arid.
Keeping indoor humidity in the 30-60 percent band protects woodwork and health, avoiding both dry-air discomfort and mold risk.
This calculator takes 2 inputs: Current humidity, Room temperature. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.