The average Illinois price for a gallon of regular unleaded gasoline is $2.59. This is ten cents cheaper than last week.
AAA reports the most expensive fuel can be found in the City of Chicago, at $3 per gallon. In contrast, the cheapest gasoline, at $2.40 per gallon, is in Carbondale.
Rockford's average gas price is $2.54 per gallon. This is 5 cents lower than last week.