Gasoline prices in Idaho have moved up about 1 cent per gallon since the July Fourth holiday, according to a survey by the Idaho chapter of the American Automobile Association.

Statewide in a survey for the Labor Day holiday, gas prices averaged $1.34 per gallon for self-serve unleaded. The AAA said national gas prices have gone up about 3 cents per gallon recently, so Idaho prices also might increase.

Idaho’s average price for a gallon of self-serve unleaded is 8.1 cents higher than the national average but 1-1/2 cents per gallon lower than one year ago.

Nationally, travel projections indicate holiday traffic volume will be up 3 percent from last year with an estimated 34 million Americans expected to take a trip of at least 100 miles during the holiday.

AAA spokesman Dave Carlson said the survey showed self-serve unleaded regular prices in Boise as low as $1.22 per gallon and as high as $1.40.

Overall, prices in North Idaho averaged the highest at $1.36 per gallon and southeastern Idaho prices were the lowest, averaging just over $1.32.

Idaho’s current average price remains among the highest in the country, exceeded only by Connecticut, California and Montana.