WBGT and Discomfort Index Calculation

・WBGT
≥ 31.0°C: Dangerous. There is a high risk of heat-related illness even for the elderly while at rest. Avoid going outside as much as possible and move to a cool indoor location.
28.0–30.9°C: High Alert. When going outside, avoid direct sunlight; indoors, be mindful of rising room temperatures.
25.0–27.9°C: Caution. Take sufficient breaks at regular intervals when exercising or performing strenuous work.
≤ 24.9°C: Caution. While the risk is generally low, there is a risk of heat-related illness during strenuous exercise or heavy labor.