I agree, how on Earth could Yuma be on this list, much less #3. It's usually at least ten degrees hotter than Phoenix in the summer. Temperatures over 120 are quite common. Filled with illegal aliens.
Now, Prescott, I can understand, probably belongs on the top 10 of any such list. Sierra Vista and Chandler are tolerably good. But hells bells, Yuma?
-ccm
Yuma is the closest thing to the Middle East that you can experience here. It's hotter than hell, and nobody speaks English.