I saw a show recently about a desert of Africa which got up to 150. The people living there rode camels miles away to work in the salt mines every day - gone from dawn until dusk. They are acclimatized of course, but even so, I can't quite fathom living and working somewhere that hot.
India and Pakistan are not in Africa and the people those countries don't ride camels. I was responding to a post that mentioned these countries.