Illinois Gas Prices Surge 41 Cents in a Week Amid Refinery Issues
Gas prices in Illinois jumped 41 cents in one week, reaching a statewide average of $4.88 per gallon. This sharp increase is attributed to refinery issues in the Great Lakes region, with global supply pressures also contributing.
Quincy Hannibal Keokuk, IL, September 22, 2026 — The average price of gasoline in Illinois has seen a significant increase over the past week, jumping 41 cents to reach a statewide average of $4.88 per gallon. This sharp rise in fuel costs is primarily attributed to disruptions at refineries located in the Great Lakes region.
Industry analysts point to operational issues impacting production at several key refineries in the Great Lakes area as the main driver behind the sudden surge. These localized problems have tightened the supply of gasoline available to consumers in Illinois and surrounding states.
In addition to the regional refinery challenges, broader global supply pressures are also cited as a contributing factor to the elevated prices at the pump. Fluctuations in international crude oil markets and other geopolitical factors can indirectly affect the cost of refined gasoline products available domestically.
The 41-cent increase marks one of the most substantial weekly jumps recorded recently, placing a heavier financial burden on Illinois drivers. The current average price of $4.88 per gallon is notably higher than historical averages for this time of year, reflecting the confluence of supply-side issues.
Details regarding the specific refinery issues, such as the nature of the problems or the expected duration of any shutdowns or slowdowns, were not immediately available. Similarly, the extent to which global supply pressures will continue to impact prices remains a subject of ongoing market analysis. Consumers are advised to monitor fuel price trends as the situation develops.
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