Weather tools
Standard Dew Point
Calculates the dew point temperature, which is the temperature to which the air needs to be cooled for water vapor to condense into dew or frost, indicating the amount of moisture in the air.
Before you use this tool
Use this if
- Calculates the dew point temperature, which is the temperature to which the air needs to be cooled for water vapor to condense into dew or frost, indicating the amount of moisture in the air.
- You want a calculation that exposes its formula: Dew Point = (b × f) / (a - f), where f = ((a × T) / (b + T)) + ln(RH/100), a = 17.27, and b = 237.7
- You already have Temperature, Relative Humidity values to enter.
Skip this if
- You need an official emergency alert or life-safety instruction.
- You need a certified professional forecast instead of a calculator estimate.
When to use or skip it
Use this if
- Calculates the dew point temperature, which is the temperature to which the air needs to be cooled for water vapor to condense into dew or frost, indicating the amount of moisture in the air.
- You want a calculation that exposes its formula: Dew Point = (b × f) / (a - f), where f = ((a × T) / (b + T)) + ln(RH/100), a = 17.27, and b = 237.7
- You already have Temperature, Relative Humidity values to enter.
Skip this if
- You need an official emergency alert or life-safety instruction.
- You need a certified professional forecast instead of a calculator estimate.