Diesel Demand: U.S. gas prices continue to soar, reaching an average of USD 3.78 per gallon, a 25-cent increase in a month. Heat waves affect refineries, cutting supply. Crude oil supply cuts from major producing countries contribute to rising prices. Gasoline exports remain high despite lower domestic demand. California faces the highest prices at USD 5.01 per gallon, while Mississippi has the lowest at USD 3.29.