The average Illinois price for a gallon of regular unleaded gasoline is $2.33. This is six cents lower than last week.
AAA reports the most expensive gas can be found in the City of Chicago, at $2.75 per gallon. By contrast, Champaign Urbana has the cheapest gas, at $2.09 per gallon.
Rockford's average per-gallon gasoline price is $2.29. This is five cents cheaper than last week.