The surging need to monitor heat stress of athletes and military personnel, owing to the adverse impacts of heat on the performance of individuals, is expected to propel the heat stress monitor market at a CAGR of 2.7% during 2020–2030. The market revenue stood at $51.4 million in 2019 and it is projected to reach $62.5 million by 2030. These instruments help military personnel and athletes in tracking the heat stress limits by providing real-time information about their health. In the recent past, portable/handheld heat stress monitors were preferred over fixed variants due to the dynamic nature of the former. Portable/handheld variants are used to monitor the intensity of heat stress in several conditions, ranging from underground mines to industrial settings. Both these types of heat stress monitors are equipped with air flow, dry bulb, globe thermometer, humidity, and natural wet bulb sensors. Among the various types of sensors, enormous volumes of globe thermometer sensors are bei...