(GasBuddy 6-15-26) The nation’s average price of gasoline has fallen 9.3 cents over the last week and stands at $3.99 per gallon, according to GasBuddy® data compiled from more than 12 million individual price reports covering over 150,000 gas stations across the country. The national average is down 52.4 cents from a month ago and is 91.1 cents per gallon higher than a year ago. The national average price of diesel fell 11.7 cents in the last week and stands at $5.182 per gallon.

Patrick De Haan, head of petroleum analysis at GasBuddy

“Average gasoline prices fell in 47 states over the last week, with the national average dropping below $4 per gallon late Sunday for the first time since mid-April. The decline came as oil prices moved sharply lower in reaction to news of a potential deal between the United States and Iran, though it remains to be seen whether the agreement will hold. A handful of price-cycling states saw averages jump before joining the broader downward trend. The real test now shifts to the Strait of Hormuz, where any reopening and resumption of normal oil flows would be the clearest signal that this relief is durable. For now, the national average could continue falling, provided there isn’t a drastic reversal and the U.S. and Iran continue moving in a positive direction.”

GAS PRICE TRENDS


The most common U.S. gas price encountered by motorists was $3.79 per gallon, down 20 cents from a week ago, followed by $3.69, $3.99, $3.89, and $3.59, rounding out the top five most common prices.

The median U.S. gas price is $3.81 per gallon, down 8 cents from last week and about 18 cents lower than the national average.

The top 10% of stations in the country average $5.47 per gallon, while the bottom 10% average $3.23 per gallon.

The states with the lowest average prices: Indiana ($3.33), Texas ($3.45) and Oklahoma ($3.49).

The states with the highest average prices: California ($5.69), Hawaii ($5.47), and Washington ($5.46).

Biggest weekly changes: Illinois (-19.5¢), Utah (-18.8¢), California (-16.7¢), Washington (-16.7¢), Nevada (-15.4¢).

DIESEL PRICE TRENDS
The most common U.S. diesel price stood at $4.99 per gallon, unchanged from last week, followed by $4.79, $4.89, $4.69, and $4.49, rounding out the top five most common prices.

The median U.S. diesel price is $4.99 per gallon, down 10 cents from last week and about 20 cents lower than the national average.

Diesel prices at the top 10% of stations in the country average $6.10 per gallon, while the bottom 10% average $4.34 per gallon.

The states with the lowest average diesel prices: Oklahoma ($4.50), Texas ($4.56), and Louisiana ($4.64).

The states with the highest average diesel prices: Hawaii ($6.97) and California