Question 1

What is the dew point?

Accepted Answer

The dew point is the temperature at which water vapor in the air begins to condense into liquid water (dew, fog, or frost). When the air temperature drops to the dew point, the air is fully saturated at 100% relative humidity.

Question 2

What dew point is comfortable?

Accepted Answer

Below 55F feels dry and comfortable. Between 55-65F is comfortable but noticeable. Between 65-70F feels muggy. Above 70F feels oppressive and uncomfortable. Above 75F is extremely uncomfortable and rare.

Question 3

Why is dew point better than humidity for comfort?

Accepted Answer

Relative humidity changes with temperature even if moisture stays the same. A 50% humidity at 90F is much muggier than 50% at 60F. The dew point measures actual moisture content, so it is a more consistent indicator of how the air feels.

Detail	Value
Air Temperature	85F (29.4C)
Relative Humidity	55%
Dew Point	67.0F (19.4C)
Temp-Dew Spread	18.0F
Comfort Level	Muggy

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