Rhode Island gas prices are on the decline.

AAA Northeast reports Monday that self-serve, regular is selling for an average of $2.21 per gallon. That's down 4 cents from the previous survey but still about 4 cents above the national average of $2.17.

The average price of gas in Rhode Island was $2.16 a year ago at this time.

AAA found self-serve, regular selling for as low as $2.09 per gallon in Rhode Island and as high as $2.30 cents. That's a range of about 21 cents.