CAMARILLO, Calif. (AP) -- The average U.S. price of a gallon of gasoline has jumped about 12 cents over the past two weeks.

The Lundberg Survey of fuel prices puts the average price for a gallon of regular at $3.88, as of April 22.

Analyst Trilby Lundberg said Sunday that's the national average for a gallon of mid-grade is $4.02. For premium it's $4.13 a gallon.

Lundberg says diesel prices rose 10 cents a gallon over the past three weeks, to $4.19.

Tucson, Ariz., had the nation's lowest average price for gas at $3.54, Chicago had the highest at $4.27.

In California, the lowest average price was $4.12 in Fresno and San Franciscans paid the highest price at $4.22.

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