The result of having performed temperature measurement in water mist atomization may be wet-bulb temperature. The air temperature in water mist atomization needs to measure dry-bulb temperature. This report presents the result of having compared with wet-bulb temperature the measured value of an ultrasonic anemometer-thermometer and thermo couple which were water mist atomization and were measured. The result confirmed a possibility that dry-bulb temperature could be measured with an ultrasonic anemometer-thermometer.