Illinois gasoline prices are sourced from AAA, updated daily. Prices reflect the retail average across the state.
Over the past 30 days, gas in Illinois has risen by $0.48 (11.2%), from $4.28/gal to $4.76/gal.
Use the alert form to get notified when Illinois gas prices cross a level you set.
Frequently Asked Questions
What is the average gas price in Illinois today?
Today's average gasoline price in Illinois is $4.76 per gallon.
Why do gas prices vary by state?
Gas prices differ across states due to varying state fuel taxes, proximity to refineries, local supply and demand, and whether a state requires special fuel blends. States like California often pay more due to higher taxes and stricter environmental fuel standards.
How often are gas prices updated?
WatchForMe updates gas prices for Illinois daily, sourced from AAA. Prices reflect the retail average across all grades and stations in the state.
How can I get a gas price alert for Illinois?
Use WatchForMe to set a free price alert for Illinois. Enter your target price and email — you'll be notified when the average gas price crosses your threshold. No app or account needed.
How have gas prices in Illinois changed over the past 30 days?
Over the past 30 days, the average gasoline price in Illinois has risen by $0.48 (11.2%), from $4.28/gal to $4.76/gal.