When I worked for a living, I was a pilot for United. I occasionally flew into Sky Harbor in Phoenix. On one such trip, I had a 5 hour layover and my First Officer lived just outside of Phoenix. He asked me if I would like to go see his home and he would call ahead and have his wife prepare us lunch, which of course, I told him that he didn't need to put his wife to work, but he said she'd be glad to do it. Anyway, it was the first time that I had ever stepped out of the airport. This was in late July, I believe. Man, I thought that I was going to suffocate. I think the temperature was over a 100 degrees and the air was so dry that I couldn't even make spit. I asked him how does he tolerates it? He said he runs from his house into the car then into the store and back into the car and then back into the house. I believe he probably did.