West Coast less California diesel price in August 2026
5 official EIA weekly readings
- The average West Coast less California on-highway diesel price in August 2026 was $5.716 per gallon, calculated from 5 EIA weekly readings.
- The weekly low was $5.526; the weekly high was $5.872.
- That monthly average was $0.510 higher than July 2026.
- It was $1.583 higher than August 2025.
This is a calendar-month view of the official EIA weekly West Coast less California series. It averages only the source weeks listed below, not a separate government monthly estimate.
August 2026 weekly chart
Every EIA week in August 2026
| Week of | $/gal | Change |
|---|---|---|
| $5.623 | ▲+$0.078 | |
| $5.526 | ▼−$0.097 | |
| $5.699 | ▲+$0.173 | |
| $5.859 | ▲+$0.160 | |
| $5.872 | ▲+$0.013 |
← July 2026 · September 2026 → · all of 2026 · all West Coast less California history · monthly CSV
Download the underlying weekly EIA series or see the methodology and source cross-check.