I've seen what extreme heat can do to people including myself: I've seen a sandstorm and what it can do too.

 When I was about 6 years old men my Dad worked with and me drove into Death Valley on a weekend lark. The problem is that the man driving us had a new car and the sand storm took all the paint off it down to the bare metal and fogged up all the windows with sand damage so we spent most of the night trying to find any place safe to be outside (there was no place). Long about dawn we drove up a narrow canyon where the canyon blocked out the wind and sand and were able to get out of the car. But, at least it didn't take all the skin off our faces and hands like it would have if we were out in it. The car took the damage and all the windows had to be replaced and it repainted eventually. It was a new car before this.

Extreme heat hits you with your brain not working right. In other words you can't think straight and you might get a serious headache or sunburn if you can't find a way to get out of the sun. If the situation is serious you really don't want a sunburn because this just makes it more certain you will get heat prostration and possibly die from this.

One moment your brain is working and the next you have difficulty even figuring out who you are. So, without air conditioning it is pretty dangerous in temperatures above about 110 to 115 degrees almost no matter who you are and the higher the humidity in the air the greater danger you have of dying within the next 24 hours.

But, if you don't have air conditioning there are many tricks to stay alive. 

1. Drink Water but don't drink too much all at once.

2. PUT water on the back of your neck or wrists especially if there is a breeze and it is dry out to cool your blood so you can continue to think and not get a severe headache from the heat.

3. Try to stay out of the sun.

4 Get inside somewhere if you can with air conditioning so your brain will continue to work so you don't get heat prostration or get so incoherent that you die..

I've been in temperatures up to about 122 degrees in Palm Springs and up to 125 degrees in Gila Bend Arizona for over 24 to 36 hours with no air conditioning to escape the heat. But, I was in my mid 20s at that time and likely wouldn't do this again now I'm 73 years old.

I've also been in temperatures over 100 degrees in Death Valley too but temperatures over 100 degrees are normal in Death Valley about 6 months a year or more.