The
dry-bulb temperature (DBT) is the
temperature of
air measured by a
thermometer freely exposed to the air but shielded from
radiation and
moisture. DBT is the temperature that is usually thought of as air temperature, and it is the true thermodynamic temperature. It indicates the amount of heat in the air and is directly proportional to the mean kinetic energy of the air molecules. Temperature is usually measured in degrees
Celsius (°C),
Kelvin (K), or
Fahrenheit (°F).