Diesel desk
The number behind the fuel line.
Freight contracts do not use the price painted on a single truck stop. They use a weekly U.S. average from the Energy Information Administration. Here is the latest published reading, what it replaced, and how a surcharge is built from it.
Latest weekly average
$6.382
Week of September 28, 2026
Versus prior week
-$0.147
Was $6.529 on September 21, 2026
Versus a year ago
+$2.628
Was $3.754
Eight weeks, one direction
EIA weekly U.S. on-highway diesel, August 3 through September 28, 2026. No estimated weeks.
Same week, by region
California is not the national average. The Gulf Coast is not California. A contract that says “DOE” almost always means the U.S. line, unless it names a region.
| Region | $/gal | Week | Year |
|---|---|---|---|
| United States | 6.382 | -0.147 | +2.628 |
| East Coast | 6.137 | -0.131 | +2.387 |
| New England | 6.510 | -0.007 | +2.548 |
| Central Atlantic | 6.531 | -0.015 | +2.629 |
| Lower Atlantic | 5.953 | -0.186 | +2.280 |
| Midwest | 6.526 | -0.154 | +2.795 |
| Gulf Coast | 5.955 | -0.222 | +2.542 |
| Rocky Mountain | 6.407 | +0.067 | +2.675 |
| West Coast | 7.357 | -0.099 | +2.825 |
| West Coast less California | 6.643 | -0.148 | +2.500 |
| California | 8.181 | -0.065 | +3.200 |
U.S. Energy Information Administration, weekly retail on-highway diesel, week of September 28, 2026. The next weekly release is scheduled for October 6, 2026. A daily pump average (such as AAA) is a different survey and will not match this number.
What a surcharge is doing
A different daily survey, such as AAA, can print another national average on the same morning. That does not mean one of them is fake. They sample different stations on different clocks. If a contract names the DOE or EIA weekly index, use this page, not a pump photo.
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