Depends to what you compare it. They do get a lot of very sunny days with low humidity (i.e. no clouds). So, a high UV index is pretty common there. Which is a

Depends to what you compare it. They do get a lot of very sunny days with low humidity (i.e. no clouds). So, a high UV index is pretty common there. Which is a measure of how much uv light makes it through the atmosphere. If you have little or no wind, things might heat up well above the air temperature.