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Why do we notice relative humidity but not absolute humidity?

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Our bodies are most sensitive to relative humidity because our body is sensitive to the rate of evaporation from our skin, lips, eyes, and breathe, rather than to the total amount of water vapor in the air. read more

Notice that the higher the relative humidity, the greater the perceived temperature. Finally, evaporate rates has another impact on the body. When the relative humidity is low, your skin, eyes, and lips will dehydrate due to evaporation causing your skin and eyes to feel itchy and lips to become chapped. read more

Humidity may be absolute or relative. Absolute humidity is the amount of water vapor in a unit volume of air which is expressed in kilograms per cubic meter. It does not change according to the temperature of the air. When there is a high amount of water vapor in the air, absolute humidity will also be high. read more

Absolute humidity is given as the percent of water vapor in the atmosphere. How a given percentage of water vapor is felt by the human body depends on the temperature so giving only the absolute humidity would tell one little about conditions absent the temperature. read more

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