Arizonans are seeing higher prices at the gas pumps, with prices increasing more than 30 cents in a month. Here's why prices are going up.

According to Gas Buddy, the average price in Phoenix is now $3.60 per gallon, a 23-cent increase in less than a week. Gas Buddy says the big reason for this is several California refineries are running into maintenance problems.

If you’ve noticed gas prices going up recently in Phoenix, you’re not alone. According to AAA Arizona, the average price of a regular gallon of gas in Phoenix is up 59 cents in the last month. What’s behind the rise in prices?