These are the 10 most expensive states for gas

Gas prices in the U.S. are at an all-time high and have topped $4 a gallon for the first time since 2008 as the conflict between Russia and Ukraine continues to escalate.

According to AAA, the national average for a gallon of gas is $4.06, which is 45 cents more than a week ago, 62 cents more than a month ago and $1.30 more than a year ago.

The national average has not been this high since July 2008, according to the website.