The average Illinois price for a gallon of regular unleaded gasoline is $2.49. This is identical to last week's price.
AAA reportsthe most expensive gas is in the City of Chicago, at $2.88 per gallon. By contrast, the cheapest gas is in Decatur, at $2.27 per gallon.
Rockford's average gas price is $2.44 per gallon. This is 3 cents cheaper than last week.
