Gas prices rose slightly across Arizona the week of July 9, according to a AAA spokesperson. Independent Newsmedia/Jason W. Brooks Weeks of sliding gas prices nationwide have concluded as the future of the ceasefire between the U.S. and Iran remains uncertain, according to a spokesman with AAA. But in Arizona, the average for a gallon of regular gasoline is down 7 cents from the week of July 2, AAA stated in a news release. You must be a member to read this story.