16th October 2019

howstuffworks
18

How much water is in the air at 100% humidity?

For example, at 20 degrees C (68 degrees F), a cubic meter of air can hold a maximum of 18 grams of water. At 25 degrees C (77 degrees F), it can hold 22 grams of water. If the temperature is 25 degrees C and a cubic meter of air contains 22 grams of water, then the relative humidity is 100 percent.

Keeping this in view, is it possible to have 100% humidity?

Surprisingly, yes, the condition is known as supersaturation. At any given temperature and air pressure, a specific maximum amount of water vapor in the air will produce a relative humidity (RH) of 100 percent. Supersaturated air literally contains more water vapor than is needed to cause saturation.

What does 100 percent humidity feel like?

A reading of 100 percent relative humidity means that the air is totally saturated with water vapor and cannot hold any more, creating the possibility of rain. If the air temperature is 75 degrees Fahrenheit (24 C) and the relative humidity is 100 percent, we feel like it's 80 degrees (27 C) out.

What is the most comfortable level of humidity?

When you consider that people generally are most comfortable when the relative humidity is approximately 40 percent, you can see how dry indoor air can take a toll on your family. Low humidity causes static electricity, dry skin, lips and hair, scratchy throats and noses, and itching and chapping.
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