WASHINGTON — The national average price of regular gasoline in the United States rose to $4 per gallon on Monday as renewed military strikes between the United States and Iran heightened concerns over global oil supplies, according to AAA.
AAA reported that the national average reached $4 per gallon, up from $3.14 per gallon during the same period last year.
Gas prices vary by state because of factors including fuel supply, transportation costs and state tax rates.
The national average first exceeded $4 per gallon in late March before falling below that level in mid-June as crude oil prices eased following an interim agreement between the United States and Iran.
Oil prices have risen again in recent days as fighting between the two countries intensified, increasing concerns about energy supplies.
Brent crude, the international benchmark, fell $1.64 to $86.46 per barrel during Monday trading but remained well above its pre-conflict level of about $70 per barrel.
U.S. benchmark West Texas Intermediate crude also declined, falling $1.87 to $79.91 per barrel.
