What environmental factors can affect the performance of ultrasonic sensors?

Fluctuations in temperature can affect the speed of sound waves in an ultrasonic sensor. As temperature increases, the speed of sound waves also increases. While the target may not have moved, the sensor may detect it as being closer due to this increase in speed. In addition, airflow caused by pneumatic equipment or fans may deflect or disrupt the path of ultrasonic waves, which could lead to the sensor failing to recognize the correct position of the target.