The average Illinois price for a gallon of regular unleaded is $2.42. This is seven cents cheaper than last week.
AAA reports the City of Chicago has the most expensive gas, at $2.81 per gallon. By contrast, the cheapest gas can be found in Champaign-Urbana, at $2.16 per gallon.
Rockford's average gas price is $2.33 per gallon, which is three cents less than last week.