Temperature is a degree of hotness or coldness the can be measured using a thermometer.

Relative Humidity can you read on the Barometer. It’ a term used to describe the amount of water vapor that exists in a gaseous mixture of air and water.

Barometric Pressure is the pressure you read on the Barometer. 29.92 in/Hg ( 1013 mb ) is the standard sea-level barometric pressure.

Dewpoint Temperature is the temperature at which the air can now longer hold all of its water vapor, and some of the water vapor must condense into liquid water. The dew point is a saturation point.

Wet-Bulb temperature is the temperature a volume of air would have if cooled adiabatically to saturation. This is the temperature you can reach with misting systems.