June 7 (UPI) -- Gas prices in the United States have swung upward again, due mainly to rising summer demand and limited capacity at refineries worldwide.
The average price for a gallon of gasoline surged early Tuesday to about $4.92 -- about 6 cents higher than Monday's average, according to AAA.
For weeks, each increase has set a new all-time high for the cost of gas in the United States.
On Monday, the national average was $4.86 per gallon. A week ago, that mark was $4.62 and a month ago it was $4.30 -- meaning the average has soared by 62 cents over the past four weeks. A year ago, the average was $3.05 per gallon.
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