Dew Point Calculator | Accurate Atmospheric Moisture Measurement

Dew Point Calculator

Calculate the temperature at which air becomes saturated with water vapor

Calculate Dew Point

Enter air temperature and relative humidity to determine the dew point temperature

°C
-40°C 60°C
%
10% 100%
Dry
Comfort
Humid
Wet

Important Notice

Dew point indicates the temperature at which dew forms. Higher dew points mean more moisture in the air, which can feel uncomfortable even at moderate temperatures.

Dew Point Temperature

16.7°C
At this temperature, the air becomes saturated and dew forms

Comfort Level: Mild humidity, generally comfortable

What this means: Dew will form on surfaces when they cool to 16.7°C or below

About Dew Point

The dew point is the temperature to which air must be cooled to become saturated with water vapor. It’s a more accurate measure of humidity than relative humidity.

Key facts:

  • Dew point indicates the actual amount of moisture in the air
  • Higher dew points mean more moisture in the air
  • When air temperature drops to the dew point, condensation occurs
  • Dew point is always lower than or equal to the air temperature

Formula used: Td = T – ((100 – RH)/5)
(where Td = dew point, T = temperature, RH = relative humidity)