Fuel prices were up across the board for the week ending Wednesday, Feb. 2, according to the Iowa Department of Agriculture. Data from AAA Iowa show the price for a gallon of regular unleaded gasoline averaged $3.22 across the state. That is up seven cents from last week and 89 cents higher than one year ago. The national average was up six cents to $3.40. Retail diesel prices climbed eight cents to a statewide average of $3.57. This is 17 cents below the national average of $3.74 per gallon but more than a dollar higher than February 2021. Wholesale ethanol was unchanged at $2.16 per gallon. Prices were more volatile for home heating fuels with propane up one cent per gallon to $1.93 with home heating oil climbing 11 cents to $3.26 per gallon. Natural gas prices spiked $1.23 at the Henry Hub reporting site to $5.36 per MMbtu.