Its around 55°C (131°F) that equals a WBT of 34.5°, but it varies with wind and humidity.
It is a matter of time. No one will survive this, unless they can create circumstances in which their surrounding temperatures are better and/or their evaporation is possible. So for example you use the lower temperature at night and close the windows during the day, your house can hold heat and cold, too. If you go outside wear stuff which gives you a shield of cold air etc.
However most people are not permanently out doors, some are though and regularly unhoused people do die during heat waves (as do people that are older, people that have sicknesses or precarious people who are not totally healthy and have shoddy housing).
Sherwood und Huber (2010) schätzten, dass ein gesunder, im Schatten ruhender Mensch Kühlgrenztemperaturen von etwa 35 °C für ungefähr sechs Stunden überleben kann:
Sherwood and Huber (2010) estimated that a healthy passive person in shade can survive WBT of (around OP's value) for roughly six hours.
In Phoenix for example in 2021 around 340 people died due to heat during the heat wave of which a third was unhoused.
Beyond that temperature people can't really sweat/evaporate enough to cool their body down which is basically creating a fever inside of you which makes processes not work that are temperature sensitive and finally you die.
Its around 55°C (131°F) that equals a WBT of 34.5°, but it varies with wind and humidity.
It is a matter of time. No one will survive this, unless they can create circumstances in which their surrounding temperatures are better and/or their evaporation is possible. So for example you use the lower temperature at night and close the windows during the day, your house can hold heat and cold, too. If you go outside wear stuff which gives you a shield of cold air etc.
However most people are not permanently out doors, some are though and regularly unhoused people do die during heat waves (as do people that are older, people that have sicknesses or precarious people who are not totally healthy and have shoddy housing).
In Phoenix for example in 2021 around 340 people died due to heat during the heat wave of which a third was unhoused.
Beyond that temperature people can't really sweat/evaporate enough to cool their body down which is basically creating a fever inside of you which makes processes not work that are temperature sensitive and finally you die.
Sorry that I can't be more precise.