PHOENIX -- Gasoline prices around Arizona are only slightly higher at the pumps this week.
Officials with Triple-A Arizona said Thursday that the average statewide price for unleaded regular gasoline is $3.51 a gallon. That's up by less than a penny from last week.
This week's national average is $3.66 per gallon, down by more than 2 cents from last week.
Tucson has the state's lowest average gasoline price at $3.35 a gallon and Flagstaff has the highest at $3.69.
Missouri has the lowest average gas prices in the continental U.S. at $3.36 a gallon; California has the highest at $4.22 a gallon.