Illinois uses the Midwest (PADD 2) weekly average from EIA, which does not publish an average for Illinois itself. Regular averaged $4.11 a gallon there in the week of October 5, 2026, −18.2¢ on the week.
Regional figure, not a state average for Illinois. EIA publishes weekly prices for nine states only. Illinois is part of the Midwest (PADD 2) region, so the prices below are the Midwest (PADD 2) average, the same figure shown for 12 other states. Pump prices in Illinois can differ from it.
Midwest (PADD 2) average, week of October 5, 2026
Regular$4.11/gal−18.2¢ vs last week+$1.18 vs a year ago
Midgrade$4.56/gal−19.4¢ vs last week+$1.14 vs a year ago
Premium$5.23/gal−17.6¢ vs last week+$1.31 vs a year ago
Diesel$6.29/gal−24.0¢ vs last week+$2.62 vs a year ago
US average regular: $4.35 (−11.1¢ on the week). The Midwest (PADD 2) average is 25¢ below it.
Regular per gallon, last 52 weeks: Midwest (PADD 2) vs USMidwest (PADD 2)US average
Source: U.S. Energy Information Administration (EIA), weekly retail gasoline and diesel prices, week of October 5, 2026. Prices include taxes and are averages of a survey of stations, published every Monday (Tuesday after a federal holiday); a single station near you can be well above or below them. Via the Roadscore API.
