Spreads
West Coast (PADD 5) vs the US average
+89.8 cents/gal vs the US average for the week of Aug 31, 2026. Positive means West Coast pays over the national number.
Data through Aug 31, 2026 · source last checked Sep 1, 2026 · page revised Sep 1, 2026
Cite
- Spread
About this data
- Source
- Derived from EIA weekly on-highway diesel survey
- Series
- West Coast (PADD 5) vs the US average
- Basis
- Region pump price minus the US average
- Unit
- cents/gal
- Calculation
- Weekly (survey week)
- Last observation
- Aug 31, 2026
- Update frequency
- Weekly
West Coast pays 89.8 cents/gal over the US average this week. The gap is 14.3 cents wider than a week ago.
West Coast diesel trades at a premium of 89.8 cents/gal over the national average. The spread widened 14.3 cents on the week.
| Period | Gap | Week of |
|---|---|---|
| This week | +89.8 cents/gal | Aug 31, 2026 |
| A week ago | +75.5 cents/gal | Aug 24, 2026 |
| 4 weeks ago | +78.2 cents/gal | Aug 3, 2026 |
| A year ago | +75.0 cents/gal | Sep 1, 2025 |
Previous weeks
Week of Aug 24, 2026
West Coast pump diesel runs 75.5 cents/gal over the US average. The gap widened 0.6 cents on the week.
An earlier week
The West Coast premium is 74.9 cents a gallon over the US average this week, narrowing 2.7 cents from a week ago.
Week of Aug 18, 2026
The West Coast premium stands at 77.6 cents/gal this week. The gap narrowed 0.6 cents on the week but has widened 2.2 cents over four weeks. The premium sits 3.8 cents above year-ago levels.