Gas Prices in Illinois
Weekly average for regular unleaded gasoline
Current Average
$3.42
per gallon
Change This Week
-$0.05
vs. National Average
+$0.23
National: $3.19
About Gas Prices in Illinois
Illinois has some of the highest state and local fuel taxes in the country, which drives pump prices up. Midwest refinery access and ethanol blend rules matter too.
Frequently Asked Questions
Data Source
Weekly retail gasoline and diesel prices published by the U.S. Energy Information Administration, a federal statistical agency within the U.S. Department of Energy.
Source: U.S. Energy Information Administration (EIA)
Data release: Sunday, March 1, 2026 · Updates weekly (typically monday)
Data reflects weekly averages as published by the EIA. Prices at individual stations may vary. GasAlert Now is not affiliated with the EIA or any government agency.