Average gasoline prices in Arizona have fallen 10.0 cents per gallon in the last week, averaging $3.38/g today, according to GasBuddy’s survey of 2,269 stations in Arizona. Prices in Arizona are 22.7 cents per gallon lower than a month ago and stand 10.0 cents per gallon higher than a year ago. The national average price of diesel has decreased 3.7 cents compared to a week ago and stands at $3.591 per gallon.
According to GasBuddy price reports, the cheapest station in Arizona was priced at $2.68/g yesterday while the most expensive was $4.99/g, a difference of $2.31/g. The lowest price in the state yesterday was $2.68/g while the highest was $4.99/g, a difference of $2.31/g.
The national average price of gasoline has fallen 4.1 cents per gallon in the last week, averaging $2.98/g today. The national average is down 19.3 cents per gallon from a month ago and stands 15.2 cents per gallon lower than a year ago, according to GasBuddy data compiled from more than 11 million weekly price reports covering over 150,000 gas stations across the country.
Historical gasoline prices in Arizona and the national average going back ten years:
October 20, 2024: $3.28/g (U.S. Average: $3.13/g)
October 20, 2023: $4.21/g (U.S. Average: $3.53/g)
October 20, 2022: $4.41/g (U.S. Average: $3.82/g)
October 20, 2021: $3.38/g (U.S. Average: $3.35/g)
October 20, 2020: $2.25/g (U.S. Average: $2.15/g)
October 20, 2019: $2.89/g (U.S. Average: $2.63/g)
October 20, 2018: $2.96/g (U.S. Average: $2.84/g)
October 20, 2017: $2.43/g (U.S. Average: $2.45/g)
October 20, 2016: $2.15/g (U.S. Average: $2.22/g)
October 20, 2015: $2.22/g (U.S. Average: $2.24/g)
Neighboring areas and their current gas prices:
Las Vegas- $3.83/g, down 4.0 cents per gallon from last week’s $3.87/g.
Phoenix- $3.60/g, down 14.0 cents per gallon from last week’s $3.74/g.
Tucson- $3.09/g, down 8.0 cents per gallon from last week’s $3.17/g.
“Gas prices have finally fallen below $3 per gallon nationally— the earliest date we’ve seen a $2.99 national average since 2020, when COVID was the primary driver of low prices,” said Patrick De Haan, head of petroleum analysis at GasBuddy. “OPEC+ deserves much of the credit for this trend, having steadily raised oil production for much of 2025. Currently, 35 states have average gas prices below $2.99/gal, and GasBuddy even recorded the first $1.99 cash price at a station in Evans, Colorado, with stations in Oklahoma and Texas not far behind. Barring any major disruptions, gas prices are likely to remain slightly below year-ago levels and could stay under $3 for much of the next few months.”
GasBuddy is the authoritative voice for gas prices and the only source for station-level data. GasBuddy’s survey updates 288 times every day from the most diverse list of sources covering nearly 150,000 stations nationwide, the most comprehensive and up-to-date in the country. GasBuddy’s averages, graphs, maps and historical pricing data covering the U.S. and Canada is available 24/7 at http://prices.GasBuddy.com.
SOURCE GasBuddy
