Best NABL Lab For Humidity Test Here are several ways to measure humidity, but two of the most common methods are: 1) Hygrometer: A hygrometer is an instrument specifically designed to measure humidity. There are various types of hygrometers, such as mechanical hygrometers, electronic hygrometers, and psychrometers. Each type has its own specific method of measuring humidity. 2) Dew Point: Dew point is the temperature at which air becomes saturated with moisture, and condensation starts to form. It is a good indicator of the absolute amount of moisture in the air. When the air temperature drops to the dew point, dew or fog forms. Humidity levels can vary throughout the day and between different locations, so it’s essential to take multiple readings to get a more comprehensive understan...