You can use a digital multi-day max/min thermometer to measure air temperature. The thermometer should be properly calibrated and installed as per the protocol specifications. To measure the air temperature, you need to turn on the air temperature display, read the current air temperature shown on the digital display, and record the temperature on your data sheet. You can find information about the tools you can use at home on the GLOBE website under the "Instrumentation" section. More details and specifications, you can consult the GLOBE Toolkit.
