Hawaii's average price for a gallon of regular unleaded gasoline hit a nation-leading $4.46 on Thursday, 28 cents higher than second-place California.
The national average reached $3.81, according to AAA data. Wyoming had the cheapest gas in the country at $3.53.
As many states brace for gas to climb to $4, Hawaii was the first to reach that mark a month ago.
The Aloha state's average on Thursday was 12 cents higher than a week ago, according to the automobile association.
Spokeswoman Marie Montgomery says motorists in Hawaii have been paying more longer, but "people who are paying $3.80 a gallon in other states are outraged about it."