The average Illinois price for a gallon of regular unleaded is $2.35. This is 8 cents cheaper than last week's average.
AAA reports the most expensive gas is sold in the City of Chicago, at $2.76 per gallon. By contrast, the cheapest gas can be found in Decatur, at $2.15 per gallon.
Rockford's average per-gallon price is $2.29. This rate is six cents cheaper than last weeks' average.