The national average price for regular gas in the United States rose to $4.11 per gallon on August 21, 2026. This marks an increase from $4.07 on August 14 and from approximately $4.08 a week prior. This August is noted as the most expensive for gas prices since 2022, according to the American Automobile Association (AAA).
Gas prices have increased compared to a month ago, when the average was $4.02, and significantly from a year ago, when the average was $3.14 per gallon. The price has fluctuated widely in 2026, ranging from a low of $2.79 in January to a high of $4.562 in May. This recent increase is the third instance this year where the national average has exceeded $4 per gallon, a record.
The fluctuations in gas prices have been attributed to geopolitical tensions in the Middle East, particularly involving Iran, Israel, and the United States, as well as issues related to the Strait of Hormuz. In July, prices had decreased to their lowest average since March, but have since risen again due to ongoing tensions.
Former President Donald Trump addressed the rising fuel costs at an event in Las Vegas, suggesting that the increases are temporary and that prices would decrease once the military conflict resolves. He has not provided a specific timeline for this resolution.
As of now, Indiana has the lowest gas prices in the nation at an average of $3.55 per gallon, while California has the highest at $5.59 per gallon. Other states with low prices include Texas at $3.65, Tennessee at $3.67, and Mississippi at $3.67. In contrast, Hawaii follows California with an average of $5.43 per gallon, and Washington state averages $5.25 per gallon.