Spreads
West Coast vs Gulf Coast
+113.7 cents/gal for the week of Aug 31, 2026. PADD 5 pump price minus PADD 3, the widest structural gap on the diesel map.
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 vs Gulf Coast
- Basis
- Region pump price minus the US average
- Unit
- cents/gal
- Calculation
- Weekly (survey week)
- Last observation
- Aug 31, 2026
- Update frequency
- Weekly
The West Coast (PADD 5) pays 113.7 cents/gal over the Gulf Coast (PADD 3) this week. The gap is 21.1 cents wider than a week ago.
The West Coast paid 113.7 cents/gal over the Gulf Coast for the week of Aug 31, 2026, the widest structural gap on the diesel map. The spread widened 21.1 cents from a week ago.
| Period | Gap | Week of |
|---|---|---|
| This week | +113.7 cents/gal | Aug 31, 2026 |
| A week ago | +92.6 cents/gal | Aug 24, 2026 |
| 4 weeks ago | +98.9 cents/gal | Aug 3, 2026 |
| A year ago | +111.7 cents/gal | Sep 1, 2025 |
Previous weeks
Week of Aug 24, 2026
The West Coast (PADD 5) premium over the Gulf Coast (PADD 3) stood at 92.6 cents/gal for the week of Aug 24, narrowing 4.0 cents on the week. The spread has eased from 113.3 cents/gal a year ago.
An earlier week
The West Coast premium over the Gulf stands at 96.6 cents/gal this week, 2.3 cents narrower than a week ago. A year ago the spread ran 111.5 cents/gal, 14.9 cents wider.
Week of Aug 18, 2026
The West Coast (PADD 5) pump price sits 98.9 cents/gal above the Gulf Coast (PADD 3) this week, unchanged on the week. The gap has narrowed 1.5 cents over four weeks and 10.6 cents from a year ago.