At what air and water temperature should hyperthermia be a noted risk?

Hyperthermia is a condition that arises when the body absorbs more heat than it dissipates, leading to an increase in core body temperature. In the context of diving, both air and water temperatures play critical roles in influencing heat regulation.

The chosen answer identifies a threshold where the combination of warm air and warm water significantly increases the risk of hyperthermia for divers. Air temperatures above 90 degrees Fahrenheit and water temperatures above 82 degrees Fahrenheit indicate conditions where the body's natural cooling mechanisms, primarily through evaporation and conduction, may be overwhelmed. Water temperature, while generally cooler than air, becomes less effective in cooling as it increases closer to body temperature.

Under these circumstances, a diver is at an increased risk because they could start to retain heat rather than lose it, especially during exertion, which is common in diving activities. It's crucial for divers to be aware of these conditions to prevent overheating and related health issues while in the water.

Understanding the significance of these temperature ranges helps divers and supervisors make informed decisions about safety, including taking breaks, staying hydrated, and recognizing the symptoms of overheating before they escalate into more serious problems.