Gas prices inching up nationwide - KWWL - Eastern Iowa Breaking News, Weather, Closings

Gas prices inching up nationwide

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The average U.S. price of a gallon of gasoline has increased 18 cents over the past two weeks.

The Lundberg Survey of fuel prices puts the average price for a gallon of regular at $3.69, about eight cents higher than the same time last year.

Nationally, a gallon of mid-grade averages $3.84 and premium $3.96.

Analyst Trilby Lundberg attributes the increase to the high cost of crude as well as the partial loss of production at a refinery in Northern California.

Tucson, Ariz., has the nation's lowest price at $3.18, while Chicago had the highest at $4.23.

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