Dew
Point
Calculator

Calculate dew point temperature, frost point, and comfort level from air temperature and relative humidity.

Input

Unit

Result

Dew Point

69.5 F

Humid
Spread
15.5 F
Frost Point
--

Comfort Scale

LevelDew Point (F)
Dry< 50
Comfortable50 - 60
Slightly Humid60 - 65
Humid65 - 70
Oppressive>= 70

Learn more

Why is dew point a better comfort indicator than relative humidity?

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Frequently Asked Questions

The dew point is the temperature at which air must be cooled for water vapor to condense into liquid. A higher dew point means more moisture in the air and a more humid feel.

Dew points below 55 degrees Fahrenheit (13 degrees Celsius) feel comfortable. Dew points above 65 degrees Fahrenheit (18 degrees Celsius) feel humid and oppressive to most people.

Relative humidity is the percentage of moisture in the air relative to the maximum it can hold at the current temperature. Dew point is an absolute measure of moisture content and does not change with temperature.

Dew Point Calculator - Temperature, Frost Point & Comfort Level | ToolsCanvas