National average diesel fuel prices were $3.35 per gallon as of Aug. 16, 2021, according to the U.S. Energy Information Administration.
Diesel Prices On The Rise Since Late 2020
National average diesel fuel prices were $3.02 per gallon as of May 24, 2021, down a little less than one cent week-over-week but up $1.06 over the same time last year.