AAA says gas prices are on the rise leading up to the busy Memorial Day travel weekend.

In its weekly report, AAA says the national average price for a gallon of unleaded was $2.70, compared with $2.66 a week ago. Still, prices are nearly a dollar lower than a year ago.

Gas prices in the District of Columbia were up 5 cents on Sunday compared to a week earlier. The average price in D.C. was $2.79 per gallon on Sunday.

In Maryland, the average price on Friday was $2.64, compared with $2.63 a week earlier. A month ago, the average price was $2.38 per gallon in Maryland.

In Delaware, prices were mostly flat. The average remained $2.60 per gallon on Sunday and was the same a week earlier.