How is humidity measured?

What is Humidity? Easily stated humidity is simply the amount of water vapor held in the air. Water vapor is the gaseous state of water. As the temperature of the air increases more water vapor can be held since the movement of molecules at higher temperatures prevents condensation from occurring. read more

Absolute humidity (units are grams of water vapor per cubic meter volume of air) is a measure of the actual amount of water vapor in the air, regardless of the air's temperature. The higher the amount of water vapor, the higher the absolute humidity. read more

Three Methods: Measuring Humidity with a Hygrometer Measuring the Dew Point Experimentally Calculating the Relative Humidity Community Q&A Humidity is how much water vapor is in the air. Relative humidity is the percentage of vapor the air holds based on the maximum amount it can hold at a specific temperature, while dew point refers to the temperature at which that vapor would condense into dew. read more

Absolute humidity is the water content of air expressed in gram per cubic meter or grams per kilogram. Relative humidity, expressed as a percent, measures the current absolute humidity relative to the maximum (highest point) for that temperature. Specific humidity is the ratio of the mass of water vapor to the total mass of the moist air parcel. read more