Spreads
California vs the US average
+161.9 cents/gal vs the US average for the week of Aug 31, 2026. Positive means California 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
- California 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
California pays 161.9 cents/gal over the US average this week. The gap is 23.1 cents wider than a week ago.
California pays 161.9 cents/gal over the US average this week. The gap widened 23.1 cents from a week ago. The premium has climbed since mid-August, when it sat at 136.8 cents.
| Period | Gap | Week of |
|---|---|---|
| This week | +161.9 cents/gal | Aug 31, 2026 |
| A week ago | +138.8 cents/gal | Aug 24, 2026 |
| 4 weeks ago | +136.8 cents/gal | Aug 3, 2026 |
| A year ago | +118.0 cents/gal | Sep 1, 2025 |
Previous weeks
Week of Aug 24, 2026
California paid 138.8 cents/gal over the US average for the week of Aug 24, and the gap widened 5.7 cents from a week ago.
An earlier week
California paid 133.1 cents/gal over the US average this week, down 3.0 cents from a week earlier. The spread stands 17.3 cents wider than a year ago.
Week of Aug 18, 2026
California pumps cost 136.1 cents/gal over the US average for the week. The gap narrowed 0.7 cents from a week ago but has climbed 3.1 cents in the past month. Year-over-year, the California premium sits 22.6 cents higher than it did a year ago.