The cost of a gallon of gas in Rhode Island has increased, but remains lower than the national average.

AAA Northeast reports Monday that self-serve, regular is up to an average of $2.73 per gallon, an increase of 4 cents in the past week.

That price is 9 cents higher than a month ago, but 95 cents less than the same time one year ago. The price is 2 cents less than the national average.

AAA found self-serve, regular gas selling for as low as $2.62 per gallon and as high as $2.89, a difference of 27 cents.