wet-bulb temperature

The wet-bulb temperature is the temperature at which a damp cloth wrapped around a lit lightbulb doesn’t dry, apparently – so obvs the temp varies depending on humidity level. So apparently if the temperature passes 28° and the wet bulb doesn’t dry, this is dangerous to be physically active in; if the temperature passes 32° this is dangerous even at rest, and if it passes 35° this is pretty much always fatal. In the present day the highest known wet-bulb temperatures have been like 31° in places like southern Iran and NW India, but as climate change continues we are predicted to see more and more incidents of these dangerous and deadly temperature/humidity combos. (Northern WA, places like Port Hedland, is also on the list of places that are likely to get dangerous.)