Even though PHX is a very dry & low humidity climate, the air at the nadir of summer is - almost literally - bitingly hot. You need shade, of course, but this

Even though PHX is a very dry & low humidity climate, the air at the nadir of summer is - almost literally - bitingly hot. You need shade, of course, but this won't do anything but block the sun. The breeze will just push the surrounding extremely hot air under this glorified gazebo.