Springfield, IL (CAPITOL CITY NOW) – Gas prices in Illinois are increasing once again, and Springfield is no exception.

According to GasBuddy.com, the average price of a gallon of unleaded in Illinois is at $4.13, an increase of 8 cents over the last week, based on a survey of more than 4,300 gas stations statewide. AAA, meanwhile, has its statewide average sitting at $4.15.

Illinois isn’t the only state with a rising average gas price.

“Average gasoline and diesel prices rose in nearly every state for the second straight week, with the national average price of gasoline likely to reach $4 per gallon within the next 48 hours and diesel already back above $5 per gallon nationally,” said Patrick De Haan, head of petroleum analysis at GasBuddy, in a news release. “While the ongoing U.S.-Iran situation continues to weigh on markets, the story is increasingly less about crude oil and more about global refining capacity — the Strait of Hormuz remains closed while continued Ukrainian attacks on Russian refineries further squeeze an already strained supply picture.”

De Haan says gas prices are expected to continue to increase, given that oil prices are also increasing.

In the Springfield area, GasBuddy’s map shows prices ranging from a low of $3.97 at one Koke Mill area station, to a high of $4.19 a gallon in some locations, as of Monday morning.

AAA’s current Sangamon County gas price average sits at $4.07.

GasBuddy says the national gas price average has risen 13 cents in the last week, to $3.95 a gallon.

Most gas prices in Illinois are lower than a month ago, but higher than a year ago.