When the air temperature is equal to the dew point temperature, the air is saturated with moisture and the relative humidity is 100%. This means that the air is unable to hold any more moisture and condensation will occur. This can lead to the formation of dew, fog, or clouds depending on the conditions.
When the air temperature is equal to the dew point temperature, it reaches the point of saturation. This means that the air is holding as much moisture as it possibly can at that particular temperature. At this point, the air is unable to hold any more water vapor, resulting in the formation of dew, fog, or clouds. This is because the air is saturated and cannot retain the excess water vapor, leading to the condensation of moisture into visible forms.
