The average price of a gallon of self-serve regular gasoline in Los Angeles County today surpassed the $4 mark for the first time since Nov. 6, increasing 2.8 cents to $4.006.
The average price has risen 31 of the past 33 days and 35 of the past 38, including 6.3 cents on Saturday, according to figures from the AAA and Oil Price Information Service.
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The average price is 24 cents more than one week ago, 38.1 cents higher than one month ago and 20.8 cents greater than one year ago.
The Los Angeles County average price is the highest in the state and the only region where it is above $4. The lowest average price is $3.712 in Modesto.
The Orange County average price rose 2.8 cents today to $3.991, its highest amount since Nov. 3. It is 25.4 cents more than one week ago, 38.3 cents higher than one month ago and 19.9 cents greater than one year ago.
The Orange County average price has risen 36 times in the past 41 days, increasing 44 cents over that span, including 6.3 cents on Saturday.
The Orange County average price matches San Luis Obispo County for the third highest in the state, behind Los Angeles County and Ventura County, where the average price is $3.996.
The increasing prices are the result of high oil prices, Middle East tension, maintenance at refineries that reduces supplies and investors shifting their money into the gasoline market "earlier and earlier," according to Jeffrey Spring of the Automobile Club of Southern California.
