Correct for the most part. You can still have very high relative humidity with a low WBT if the dry-bulb temperature is also low.
When the WBT gets above 35°C, it’s not only dangerous, but positively lethal when sustained for even the healthiest person as sweating (or any other form of evaporative cooling for that matter) can no longer keep the body at a suitable temperature.
Correct for the most part. You can still have very high relative humidity with a low WBT if the dry-bulb temperature is also low.
When the WBT gets above 35°C, it’s not only dangerous, but positively lethal when sustained for even the healthiest person as sweating (or any other form of evaporative cooling for that matter) can no longer keep the body at a suitable temperature.