# 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_ > 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. ## The numbers | 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 | ## 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 period: Weekly (survey week) - Last observation: Aug 31, 2026 - Update frequency: Weekly --- Cite: California vs the US average: +161.9 cents/gal for the week of Aug 31, 2026. Monday Diesel. https://mondaydiesel.com/spreads/california Canonical URL: https://mondaydiesel.com/spreads/california