The average state price for a gallon of regular unleaded is $2.18. This is identical to last week's average, according to AAA.
The most expensive gasoline can be found in the city of Chicago, at $2.55 per gallon. By contrast, the cheapest gasoline can be found in Champaign-Urbana, at $1.96 per gallon.
Rockford's average gas price is $2.07 per gallon.
