Relative humidity measures the density of water vapor in a space relative to the temperature in the same space. Scientists describe relative humidity in the Journal of Applied Meteorology and ...

However, the relative humidity in this case would only be 52%, giving no indication of the true feel of the air. Dew point and frost or snow The dew point is also a useful measure in other seasons.

Relative humidity may be what gets talked about most in forecasts, but dew point is actually a much more useful measure of how much water vapor is in the atmosphere.

Whereas, relative humidity (RH), in simple terms, is a measurement of how much water vapor is in the air compared to the maximum amount of water vapor saturation possible for that atmosphere/facility.

Relative humidity (RH) measures the amount of moisture in the air compared to the amount of total moisture the air can hold at a given temperature — for example, 55 F (13 C), ...

Some weather stations measure relative humidity and other key metrics from outside your home. Shop Now. However, you don’t need such devices to determine if you need a dehumidifier.