Baltimore, MD - Apr. 8, 2024 - (FOX45) Gas prices in Baltimore have risen by 7.5 cents per gallon in the past week, with a month-over-month increase of 28.2 cents and a year-over-year increase of 9.0 cents. Nationally, diesel prices have also increased to $4.02 per gallon. The cheapest gas station in Baltimore was $3.29/g, while the most expensive was $4.47/g. According to Patrick De Haan of GasBuddy, rising oil prices and seasonal factors are contributing to the increase, with further hikes expected, especially in the West Coast and later in the mid-Atlantic and Northeast states. Nationally, the average gasoline price has risen by 6.5 cents per gallon in the last week and 17.1 cents per gallon from a month ago.