At what air temperature should hyperthermia be considered a potential risk?

Hyperthermia becomes a significant concern at temperatures above 90 degrees Fahrenheit due to the body's increasing difficulty in regulating its temperature in hot conditions. At this threshold, individuals can experience a range of heat-related illnesses, from heat exhaustion to heatstroke, particularly when engaging in physical activities such as SCUBA diving.

As air temperatures rise above 90 degrees Fahrenheit, the risk increases because the body's natural cooling mechanisms, primarily sweating and increased blood flow to the skin, may become less effective. Factors such as humidity, direct sunlight, and physical exertion can further exacerbate the risk, making the understanding of this temperature threshold important for safe diving practices.

Additionally, it is essential to consider individual factors such as hydration, fitness levels, and acclimatization to heat, as these can vary significantly between divers. Thus, acknowledging the risk of hyperthermia at temperatures exceeding 90 degrees Fahrenheit is crucial for ensuring divers' safety and preventing heat-related illnesses during diving activities.