National gas prices up 12 cents in past 3 weeks

CAMARILLO, Calif. (AP) - The average price of a gallon of gasoline nationwide has spiked 12 cents over the past three weeks. That's according to the Lundberg Survey of fuel prices, which puts the price of a gallon of regular at $3.36.

Midgrade costs an average of $3.51 a gallon, and premium is at $3.62. Diesel held steady, at $3.90 a gallon.

Of the cities surveyed, Salt Lake City, Utah, has the nation's lowest average price for gas at $2.86. Los Angeles has the highest at $3.69.

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