Gas prices are at their highest level in four years as a record number of people are traveling for the Memorial Day weekend, and Western Pennsylvania has some of the most expensive gasoline in the state.

The average price of gas in Pennsylvania on May 21 was nine cents higher than the national average. Pennsylvania’s average cost for gas was $4.64, with AAA reporting a national average of $4.55.

Prices were even higher in Pittsburgh and other western areas of the state. The Steel City saw a slight drop by a few cents from the previous week, but prices could rise as 45 million people travel for the holiday, up from 44.8 million last year. Also, AAA says 87% of them, or 39.1 million people, are driving, up from 39 million in 2025.

Here’s a look at fuel prices in Pittsburgh and surrounding areas for the Memorial Day holiday.

Gas prices are at their highest level in four years, AAA reports

The national average for a gallon of regular is at $4.56, up 3 cents over last week and $1.38 higher than this time last year. Current prices are close to what drivers were paying 4 years ago, AAA reports, when the national average on Memorial Day was $4.61.

With gasoline demand on the rise, per the Energy Information Administration, and the prolonged closure of the Strait of Hormuz, AAA says pump prices are likely to remain elevated as the summer travel season gets underway.

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The Subaru Forester, pictured along with other winners of the 2026 IIHS Top Safety Pick awards for small SUVs, also happens to be one of the best cars for a road trip.

(Mark Phelan/Detroit Free Press)How much is gas in Pennsylvania?

The state average for gas in Pennsylvania on May 21 is as follows:

Regular: $4.637, down from $4.645 on May 20 and $4.649 the week prior

Mid-grade: $5.062, down from $5.067 on May 20 and $5.071 the week prior

Premium: $5.449, down from $5.458 on May 20, up from $5.447 the week prior

Diesel: $5.922, down from $5.926 on May 20 and $5.949 the week prior

What is the average price of gas in Pittsburgh, Western PA?

On May 21, Pittsburgh’s average cost of regular gas was $4.82, down from $4.83 on May 20 and $4.88 the previous week. Mid-grade came in at $5.25, premium was $5.69 and diesel was $6.01.

Allegheny’s average cost of regular gas was slightly higher at $4.85 on May 21.

Here’s the average cost of gas in other Western Pennsylvania counties as of May 21:

Finch Walker is the Pittsburgh Connect Reporter for the USA TODAY Network. Contact Walker at FWalker@usatodayco.com. Instagram: @finchwalker_. X: @_finchwalker.

This article originally appeared on USA TODAY: See gas prices in Pittsburgh, Western PA ahead of Memorial Day travel