In this example, the reported dew point temperature is 58 degrees.
Dew points provide insight into the amount of moisture in the air.
The higher the dew point temperature, the higher the moisture content for air at a given temperature. When the dew point temperature and air temperature are equal, the air is said to be saturated. Therefore, if the air cools, moisture must be removed from the air and this is accomplished through condensation . This process results in the formation of tiny water droplets that can lead to the development of fog, frost, clouds, or even precipitation. Other upper air observation maps may actually report dew point depression instead of dew point temperature.