How can relative humidity be measured?

While relative humidity can be measured with a hygrometer, most modern dehumidifiers use a built-in humidistat to measure relative humidity levels, allowing the user to set a specific desired humidity level for easy, automatic and hands-free operation. read more

Compared to relative humidity, dew point is frequently cited as a more accurate way of measuring the humidity and comfort of the air, since it is an absolute measurement (unlike relative humidity). The relative humidity is 100 percent when the dew point and the temperature are the same. read more