Dew Point Temperature

Dew point, abbreviated as \(T_d\), is the temperature the air needs to be cooled to (at constant pressure) in order to achive a relative humidity of 100%.

 

Dew point Temperature formula

\(\large{ T_d =  \left(  \frac{ RH }{ 100 }  \right)^{ \frac{1}{8} }  \;   \left(  112 + 0.9 \; T  \right)  + 0.1 \; T - 112    }\)

Where:

Units	English	Metric
\(\large{ T_d }\) = dew point temperature	\(\large{F}\)	\(\large{C}\)
\(\large{ RH }\) = relative humidity	\(\large{F}\)	\(\large{C}\)
\(\large{ T }\) = temperature	\(\large{F}\)	\(\large{C}\)