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
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
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)