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Friday, Mar. 20, 2026

Did the price of diesel increase in Arizona in the past week?

Mia Osmonbekov, Arizona Center for Investigative Reporting
yes

Yes. The price of diesel has increased across Arizona, with Maricopa, Yavapai and Coconino counties leading the surge. According to the American Automobile Association’s Oil Price Information Service, relied on as a national monitor of fuel costs, the average price of diesel in Arizona as of March 20 is $5.40, up 48 cents from a week ago. Nationally, the price of diesel is $5.16, up 27 cents from last week.

Before the U.S launched a war against Iran, the price of diesel in Arizona was $3.52. This is part of a larger pattern of diesel and gasoline prices surging since the conflict began, with a recent uptick tied to the blockage of the Strait of Hormuz, a vital passageway for the global supply of oil, diesel and gas.

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The Arizona Center for Investigative Reporting is the state’s only independent, nonpartisan and collaborative nonprofit newsroom dedicated to statewide, data-driven investigative reporting. AZCIR's mission is to hold powerful people and institutions accountable by exposing injustice and systemic inequities through investigative journalism.

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