When the temperature in my building goes up so does the relative humidity, why?

Question

The temperature in the building starts out at 70 degrees and in a couple of hours raises to 73 degrees. The relative humidity goes from 61.1% to 66%. Would lowering the temperature help it go down.

Answer 1

The capacity of air to hold the moisture usually increases with temperature.So,if the temperature of the air increases,then the humidity also will also increase provided there is a source of moisture supply .

Ruducing the temperature to the corresponding dew point temperature will cause condensation of the excess moisture into water droplets, thereby decreasing the moisture content.

Answer 2

Check and see if your ac. is a swamp cooler. that could be why. just a guess

Answer 3

Warm air is less dense and able to hold more moisture.  Cool air is denser and unable to hold as much moisture.  So lowering the temperature reduces relative humidity.

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Answer 4

The temperature of the air determines how saturated with water it can become. When you raise the temperature above the dew point, more water can evaporate and enter the atmosphere, and when it the temperature goes below the dew point, the water condenses out of the air. You can see it as fog on your windows.

Get a dehumidifier. That will help it go down.