Gas prices are going up nationwide, but not in northern New England.

According to the latest GasBuddy.com survey, Maine gas prices fell half a cent per gallon the last week to an average of $2.41. In Presque Isle, gas prices have been up and down in the past few days. Prices in the Star City fell to $2.43 a gallon from $2.46 last week, then down to $2.37, back up to $2.43 and now back down to $2.37 a gallon at most stations. A couple of gas outlets were still at $2.43 a gallon as of Tuesday afternoon.

The average price in New Hampshire is $2.38 per gallon, a penny lower than last week. In Vermont, prices fell slightly to $2.54 per gallon.

Meanwhile, the national average price of gasoline rose to $2.43 per gallon in the past week. That's 12 cents a gallon lower than a month ago but almost as much more per gallon than a year ago.