When measuring air temperature it is best to avoid?

When measuring air temperature, it is best to avoid direct sunlight, as it can cause the readings to be inaccurately high. Additionally, measurements should be taken away from heat sources, such as buildings or pavement, which can also skew results. Using a properly shielded thermometer can help ensure accurate readings by minimizing these environmental influences. Lastly, placing the thermometer at an appropriate height, typically around 1.5 to 2 meters above ground, ensures a more representative measurement of the air temperature.