WK 37 · SEPTEMBER 7, 2026 · ILLINOIS
Illinois
$3.89
-6.3% vs national avg
Regional average — EIA publishes no weekly Illinois retail series, so this is the PADD region price your area falls into.
Now
$3.89
vs National
-6.3%
12-wk change
+$0.17
PADD region
PADD padd_2_midwest
This state is $0.26 below national — paid every fill-up, every commute.
Highest fill-up cost — Illinois avg $3.89/gal
Worst Vehicles In Illinois
Lowest fill-up cost — Illinois avg $3.89/gal
Best Vehicles In Illinois
Across the line
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Source: EIA · Updated September 7, 2026