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Humidity, and more specifically, relative humidity, is a function of temperature and the amount of water vapor in the air. Relative humidity is simply the percentage of water vapor in the air versus how much water vapor that air can hold. The warmer the air, the more water vapor it can hold. That is why, typically, the RH is higher in the morning, then falls as the day goes on, only to climb again during the night. The humidity will normally go up if the air is over a body of water due to evaporation of water into that air.

2007-10-02 07:29:16 · answer #1 · answered by cyswxman 7 · 0 1

You may be knowing that warm air can hold more moisture than a cold air.That means if the temperature is more, the air can hold more moisture making the air more humid.On the other hand, if you increase the temperature of the air without adding moisture, the relative humidity value will decrease.This shows that the RH depends upon the temperature.
If you compare the charts showing the diurnal variation of temperture and humidty for a particular day, you can notice that ,at the time when maximum value of temperature is recorded, the RH value will be the least.
Humidity depends upon location also.On coastal stations,see-breeze brings lot of moisture towards the land area,making the value of RH always higher than interior areas.
As cold air can hold less moisture only (when compared to warm air) the moisture over the places at higher latitudes will be always less only.But RH value may be higher .
The samething applies to places at higher altitudes.Because of less temperatures at these places,the moisture in the air above these places will be less only whereas the RH value may be more.
Only humidity is responsible for many weather conditions.So, it is not dependent upon weather.On the otherhand weather depends upon humidity.Sometimes, winds may bring lot of moisture from the sea if there is a disturbed weather over land.In this case,weather affects the humidity.

2007-10-02 22:43:02 · answer #2 · answered by Arasan 7 · 1 0

Humidity depends on Temperature and Pressure.

2007-10-02 07:17:15 · answer #3 · answered by hmata3 3 · 1 1

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