Low humidity. But don't move to Phoenix for all year. I lived in Phoenix for 14 years and chose to live in the Prescott area. Little snow. Much cooler than Phoenix. I live north of Chino Valley and our weather is close to Flagstaff ... but definitely not their snow. I chose to not go to Payson area due to lots of pines and forest fire possibilities. We have dust and wind. Pros and Cons every where. I had breast cancer and had wonderful doctors up here...amazingly so vs. Phoenix. But Mayo Clinic is within 2 hour drive.