Arizona drivers paid an average of $3.95 per gallon for regular gasoline this week, marking a decrease of about $0.13, or 3.2%, from the previous seven days. The move lowered the statewide average after a brief run-up in late spring, but gasoline remains substantially more expensive than it was a year earlier — roughly $0.71, or 22%, above prices reported in early July of the prior year. Diesel fuel followed a similar pattern: the statewide average slipped to $4.92 per gallon, down $0.17 from a week earlier, a 3.3% decline, while remaining about $1.38, or 39%, higher than the year-ago level. All price figures reflect the snapshot taken on July 3.
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Close-up of gas pump nozzles at an Arizona station; gasoline averaged about $3.95 per gallon this week after a roughly $0.13 weekly decline.
The published statewide averages are drawn from regularly compiled fuel-price tracking that aggregates retail pump prices across metropolitan and rural markets. Those aggregated numbers provide a week-over-week and year-over-year comparison: they show that while headline averages eased over the last seven days, the longer-term trend since this time last year is upward for both gasoline and diesel. For gasoline, the most expensive statewide reading recorded in recent history was $5.39 per gallon on June 17, 2022. For diesel, the historical high noted in the tracking was $6.21 per gallon on April 8, 2026.
Gasoline prices vary considerably within Arizona, with mountain and resort communities among the priciest markets. Flagstaff recorded the highest average pump price in the state at $4.41 per gallon. Prescott followed at $4.35, and the Sierra Vista–Douglas area registered an average of $4.21. Yuma, along the western border, averaged $4.08 per gallon, while the Lake Havasu–Kingman region stood at $4.03. Those numbers place several smaller metros well above the statewide mean and illustrate the geographical differences consumers face when filling up.
The Phoenix metropolitan area is not monolithic when it comes to retail fuel costs. Scottsdale’s average price was listed at $4.02 per gallon, a figure above the statewide average. Parts of the broader Phoenix region were closer to the state mean: the East Valley averaged $3.86, Phoenix–Mesa came in at $3.85, Peoria at $3.84 and Phoenix proper at $3.83. Glendale and Pima County both showed average prices of $3.80 per gallon, the same number recorded for Tucson and the West Valley. These city-level readings highlight pockets where drivers encounter prices modestly higher or slightly lower than the statewide figure.
A motorist pumps gas into a vehicle at an Arizona station; state fuel prices fell slightly over the last week while remaining higher than a year ago.
On a national scale, some states continue to post much lower retail prices than Arizona. The five states with the least expensive gasoline averages at the time of this report were Indiana at $3.10 per gallon, Texas at $3.35, Oklahoma at $3.36, Tennessee at $3.40 and Arkansas at $3.42. Those state-level averages contrast with Arizona’s $3.95 average and reflect regional supply, taxes and market dynamics that influence pump prices across the country.
The weekly pullback in Arizona’s pump prices — roughly a dime to a dime and a half for gasoline and a bit more for diesel — reduced immediate upward pressure for consumers during one of the busiest travel weeks of the summer. Nonetheless, the year-over-year increases mean that drivers who fill up as frequently as they did a year ago are still paying significantly more per gallon for both gasoline and diesel. The recorded historical peaks remain higher than current averages for gasoline and diesel, but the year-to-date comparisons underline that fuel costs are elevated compared with the prior summer period.
These figures provide a point-in-time look at retail fuel costs in Arizona and a sortable view of how different metro areas and neighboring states compare. The numbers reflect reported averages for July 3 and will change as market conditions, refinery outputs, distribution logistics and seasonal demand evolve. Readers interested in tracking short-term movements should consult regularly updated regional price summaries for the latest pump averages.
As of July 5, AAA data shows Arizona's regular gas average has continued falling to $3.939 per gallon, with diesel at $4.888. The national average sits at $3.804, according to gasprices.aaa.com, as the post-holiday trend offers modest ongoing relief despite prices remaining elevated year-over-year.
The U.S. Energy Information Administration reported that for the week ending June 26, 2026 U.S. commercial crude oil inventories fell by 3.8 million barrels to 408.4 million barrels (about 7% below the five‑year average), while total motor gasoline stocks decreased by 2.3 million barrels and distillate stocks rose by 2.5 million barrels; the Strategic Petroleum Reserve was reported at 325.7 million barrels.
EIA data for the same week showed U.S. crude refinery inputs averaged about 17.2 million barrels per day with refineries operating near 96% of capacity, gasoline production increased to roughly 10.0 million barrels per day, and WTI crude traded around $70.30 per barrel—conditions that can tighten supply and help support retail fuel prices.
For additional context on what is built into pump prices: Arizona imposes an 18¢ per‑gallon state motor fuel excise tax, and the federal excise tax adds 18.4¢ per gallon to gasoline and 24.4¢ per gallon to diesel.