PADD 5 diesel price (West Coast) in September 2025
5 official EIA weekly readings
- The average PADD 5 (West Coast) on-highway diesel price in September 2025 was $4.519 per gallon, calculated from 5 EIA weekly readings.
- The weekly low was $4.484; the weekly high was $4.533.
- That monthly average was $0.032 higher than August 2025.
- It was $0.267 higher than September 2024.
This is a calendar-month view of the official EIA weekly West Coast series. It averages only the source weeks listed below, not a separate government monthly estimate.
September 2025 weekly chart
Every EIA week in September 2025
| Week of | $/gal | Change |
|---|---|---|
| $4.484 | ▲+$0.023 | |
| $4.533 | ▲+$0.049 | |
| $4.523 | ▼−$0.010 | |
| $4.524 | ▲+$0.001 | |
| $4.532 | ▲+$0.008 |
← August 2025 · October 2025 → · all of 2025 · all West Coast history · monthly CSV
Download the underlying weekly EIA series or see the methodology and source cross-check.