Average gasoline prices in Illinois have fallen 5.3 cents per gallon in the last week, averaging $3.18/g today, according to GasBuddy's survey of 4,378 stations in Illinois. Prices in Illinois are 1.9 cents per gallon lower than a month ago and stand 16.1 cents per gallon higher than a year ago. The national average price of diesel has decreased 0.5 cents in the last week and stands at $3.473 per gallon.

According to GasBuddy price reports, the cheapest station in Illinois was priced at $2.68/g yesterday while the most expensive was $4.59/g, a difference of $1.91/g. The lowest price in the state yesterday was $2.68/g while the highest was $4.59/g, a difference of $1.91/g.

The national average price of gasoline has fallen 3.0 cents per gallon in the last week, averaging $2.98/g today. The national average is down 4.9 cents per gallon from a month ago and stands 11.8 cents per gallon lower than a year ago, according to GasBuddy data compiled from more than 11 million weekly price reports covering over 150,000 gas stations across the country.

Neighboring areas and their current gas prices:
Peoria- $3.16/g, up 1.2 cents per gallon from last week's $3.14/g.
St. Louis- $2.91/g, down 4.6 cents per gallon from last week's $2.95/g.
Champaign- $2.97/g, down 3.7 cents per gallon from last week's $3.00/g. 

"After a few weeks of rising gas prices, the national average has reversed course, declining as we close out 2024," said Patrick De Haan, head of petroleum analysis at GasBuddy. "2024 will mark the second consecutive year of a decline in the national average. In the week ahead, we’ll likely see gas prices fall in some states, while the Great Lakes region may experience another price cycle. Overall, I expect the national average to remain mostly stable. 
   
GasBuddy is the authoritative voice for gas prices and the only source for station-level data. GasBuddy's survey updates 288 times every day from the most diverse list of sources covering nearly 150,000 stations nationwide, the most comprehensive and up-to-date in the country. GasBuddy's averages, graphs, maps and historical pricing data covering the U.S. and Canada is available 24/7 at http://prices.GasBuddy.com.