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Average retail gasoline prices in Illinois have fallen 4.7 cents per gallon in the past week, averaging $2.82/g yesterday.

This compares with the national average that has increased 0.6 cents per gallon in the last week to $2.75/g, according to gasoline price website IllinoisGasPrices.com.

Including the change in gas prices in Illinois during the past week, prices yesterday were 20.5 cents per gallon higher than the same day one year ago and are 1.1 cents per gallon lower than a month ago.

The national average has decreased 2.1 cents per gallon during the last month and stands 21.6 cents per gallon higher than this day one year ago.

"Gasoline prices in a majority of the United States have been stuck in narrow range over the past several weeks," said Patrick DeHaan, GasBuddy.com Senior Petroleum Analyst.

"The longer oil and gasoline prices remain in this tight range, the harder it will be for prices to break out of that threshold." DeHaan cites the lack of significant economic improvement and quiet tropics thus far as a reason prices have failed to move significantly. "Unless we start seeing consistently good economic news or several large tropical storms, gas prices should remain relatively muted," he adds.

About IllinoisGasPrices.com:

GasBuddy.com operates over 200 live gasoline pricetracking websites, including IllinoisGasPrices.com.

GasBuddy.com was named one of Time magazine's 50 best websites and to PC World's 100 most useful websites of 2008.