Drivers filling up at pumps in the East Valley are paying 62 cents more for a gallon of regular than they were this time last month.

AAA Arizona’s latest figures put the cost of a gallon at $4.84, up from $4.22 at this point in March and 16 cents more than last week.

AAA officials said oil prices are the main reason as prices are in the $80-a-barrel range.

“When the cost of crude oil crosses the $80-a-barrel mark, that puts a lot of upward pressure on what we pay at the pump,” Andrew Gross, AAA spokesperson, said.

“And as long as oil costs remain at the current level, drivers will likely see incremental price increases for now.”

Nationally, the average cost for a gallon of regular jumped nine cents this week to $3.64.

Arizona’s gas prices are up 18 cents a gallon week over week, the largest increase in the country. The statewide average of $4.52 a gallon trails only California ($4.89) and Hawaii ($4.78).