The average Illinois price for a gallon of regular unleaded is $2.29. That's 2 cents more expensive than last week's average.
AAA reports the most expensive gas is in the City of Chicago, at $2.63 per gallon. By contrast, you can find the cheapest gas in Champaign-Urbana, at $2.05 per gallon.
Rockford's average per-gallon price is $2.17. This is three cents cheaper than last week's average.
