WNIJ's Gas Price Monday: December 18, 2017
The average Illinois price for a gallon of regular unleaded gasoline is $2.49. This is identical to last week's average.
AAA reports the most expensive gasoline is in the city of Chicago, at a price of $2.86 per gallon. In contrast, the cheapest gas is in Quincy, at $2.25 per gallon.
Rockford's average price is $2.40 per gallon. This is 4 cents cheaper than last week.