It’s called the “wet bulb globe temperature.” This is a cousin of the heat index, or the “feels like” temperature. But although both are temperature metrics that determine heat risk to ...

Wet-bulb temperature (WBT ... When the WBT exceeds the upper limit of safety, sweat cannot evaporate, meaning the body cannot cool itself down – this can be fatal. Tapio Schneider, a professor ...

Recommended time in direct sunlight can drop to as low as 15 minutes per hour if the wet bulb globe temperature reaches 90 degrees or higher, meaning 45-minute breaks each hour are urged.

The analysis calculated an approximate form of “wet-bulb globe temperature,” a metric that combines temperature, humidity, sunlight and wind. Scientists consider it the gold standard for ...