As we start the week, gas prices on average have gone down.
In Westmoreland County, the average cost of a gallon of gas is $3.10 a gallon. The cheapest average gas price in surrounding counties is in both Armstrong and Somerset counties, as they have $3.07 a gallon each.
Gas prices across the state are now at $3.02 a gallon on average, down four cents from last week.
