The instrument used to measure humidity is known as a hygrometer. Hygrometers may be used to measure the relative humidity or absolute humidity in the air. More » Science Weather & Tides

The instruments that measure water vapor content in the air are called a hygrometer and psychrometer. Water vapor is water suspended in the atmosphere in the form of an invisible gas. Humidity is the measure of water vap... More » Science Chemistry Chem Lab

The actual humidity in terms of the water content of air is typically expressed as grams per kilogram or kilogram per kilogram. Humidity is typically expressed as a percentage of how humid it could physically be at a giv... More » Science Weather & Tides
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A psychrometer is a simple form of hygrometer used to measure the level of humidity in the atmosphere. It has a dry-bulb thermometer and a wet-bulb thermometer that work together to measure atmospheric humidity. The dry-... More » Science Weather & Tides

There are different tools available to help measure humidity, including a hygrometer, a hygrograph and a sling psychrometer. Each separate tool that measures humidity does so on a different scale. More » Science Weather & Tides

A hygrometer measures humidity, or the amount of water vapor present in the air. Hygrometers are standard tools for weather forecasters, providing information about the potential for precipitation. They are also vital pa... More » Science Weather & Tides

Forty-five percent relative humidity is the comfortable relative humidity level. Below 30 percent humidity, the air feels dry, and above 52 percent relative humidity, the air feels very moist. More » Science Weather & Tides