wet bulb globe temperature index; WBGT index; heat stress index
A technical index used to assess heat stress risk, combining temperature, humidity, and solar radiation. Commonly referenced in weather reports and occupational safety guidelines.
On days when the WBGT index is high, it's better to avoid outdoor exercise.
Compound of 暑さ (heat) and 指数 (index). A direct translation of the English term 'heat index', though technically referring to the WBGT index.