A fuel tanker at a filling station in Illinois. The Midwest experienced the largest cost increase at 29.1 cents a gallon. (Nam Y. Huh/Associated Press)

Proving last week’s surge wasn’t a fluke, the national average diesel price skyrocketed 22.2 cents to reach $4.127 a gallon, according to Energy Information Administration data released July 31.

Highlights

  • The national average diesel price shot past $4 a gallon with the largest weekly increase since a 40.1-cent burst March 14, 2022.
  • The average diesel price has gone up 32.1 cents in the past two weeks. The last time diesel’s price rose for two consecutive weeks was Jan. 23 and Jan. 30, totaling 9.8 cents.
  • A gallon of diesel now costs $1.011 less on average than it did at this time a year ago.
  • The average diesel price rose in all 10 regions in EIA’s weekly survey, ranging from a high of 29.1 cents in the Midwest to a low of 6.1 cents in New England.
  • The national average price for a gallon of gasoline also posted a pronounced increase, rising 16.1 cents to settle at $3.757.

U.S. On-Highway Diesel Fuel Prices

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EIA regional fuel chart

EIA.gov