The average Illinois price for a gallon of regular unleaded gasoline is $2.29, which is two cents more than last week's average.
AAA reports the most expensive gas can be found in the City of Chicago at $2.68 per gallon. By contrast, the cheapest is in Quincy at $2.10 per gallon.
Rockford's average gas price is $2.20, a cent cheaper than last week.
