California Diesel Prices
week of June 15, 2026
California diesel is $6.71 — about 165.4¢ (33%) above the U.S. average diesel price of $5.06, and about 115.9¢ more than regular gas in California ($5.55).
California diesel back to 2000
California’s average diesel price, right up to the latest weekly EIA value. Short ranges show the weekly series; longer ranges step out to monthly. Toggle between the price at the pump and constant 2025 dollars.
View the data (53 points · weekly)
| Date | Nominal | 2025 $ |
|---|---|---|
| 2025-06-16 | $4.78 | $4.79 |
| 2025-06-23 | $4.89 | $4.90 |
| 2025-06-30 | $4.87 | $4.87 |
| 2025-07-07 | $4.89 | $4.89 |
| 2025-07-14 | $4.93 | $4.93 |
| 2025-07-21 | $4.96 | $4.96 |
| 2025-07-28 | $4.96 | $4.95 |
| 2025-08-04 | $4.95 | $4.93 |
| 2025-08-11 | $4.89 | $4.87 |
| 2025-08-18 | $4.87 | $4.85 |
| 2025-08-25 | $4.87 | $4.85 |
| 2025-09-01 | $4.91 | $4.88 |
| 2025-09-08 | $4.96 | $4.92 |
| 2025-09-15 | $4.97 | $4.94 |
| 2025-09-22 | $4.99 | $4.95 |
| 2025-09-29 | $4.98 | $4.95 |
| 2025-10-06 | $4.97 | $4.79 |
| 2025-10-13 | $4.94 | $4.76 |
| 2025-10-20 | $4.90 | $4.72 |
| 2025-10-27 | $4.93 | $4.76 |
| 2025-11-03 | $4.93 | $4.89 |
| 2025-11-10 | $4.99 | $4.94 |
| 2025-11-17 | $5.00 | $4.95 |
| 2025-11-24 | $4.98 | $4.94 |
| 2025-12-01 | $4.92 | $4.86 |
| 2025-12-08 | $4.86 | $4.80 |
| 2025-12-15 | $4.78 | $4.72 |
| 2025-12-22 | $4.71 | $4.65 |
| 2025-12-29 | $4.66 | $4.60 |
| 2026-01-05 | $4.64 | $4.58 |
| 2026-01-12 | $4.61 | $4.55 |
| 2026-01-19 | $4.66 | $4.59 |
| 2026-01-26 | $4.71 | $4.64 |
| 2026-02-02 | $4.83 | $4.75 |
| 2026-02-09 | $4.84 | $4.76 |
| 2026-02-16 | $4.86 | $4.78 |
| 2026-02-23 | $4.94 | $4.86 |
| 2026-03-02 | $4.99 | $4.86 |
| 2026-03-09 | $6.10 | $5.94 |
| 2026-03-16 | $6.43 | $6.27 |
| 2026-03-23 | $6.87 | $6.70 |
| 2026-03-30 | $7.22 | $7.04 |
| 2026-04-06 | $7.57 | $7.33 |
| 2026-04-13 | $7.56 | $7.32 |
| 2026-04-20 | $7.33 | $7.09 |
| 2026-04-27 | $7.23 | $7.00 |
| 2026-05-04 | $7.36 | $7.09 |
| 2026-05-11 | $7.32 | $7.06 |
| 2026-05-18 | $7.22 | $6.96 |
| 2026-05-25 | $7.18 | $6.92 |
| 2026-06-01 | $7.05 | $6.80 |
| 2026-06-08 | $6.94 | $6.69 |
| 2026-06-15 | $6.71 | $6.47 |
Where today sits
Much of why California diesel runs so high mirrors why its gasoline does — the state’s high fuel taxes, its relatively isolated fuel market, and its environmental fuel programs — layered on top of the reasons diesel costs more than gasoline everywhere. We cover those in the explainers below; we don’t put California-diesel-specific dollar figures on each factor, because EIA doesn’t break the premium down that way.
California diesel, answered
- What is the average price of diesel in California right now?
- As of the week of June 15, 2026, California's average on-highway diesel price was $6.71 per gallon, according to U.S. Energy Information Administration data.
- Why is California diesel so expensive?
- California has the most expensive diesel in the country, about 165.4¢ above the U.S. average of $5.06. The same structural forces that make California's gasoline the priciest among the lower-48 states — the nation's highest fuel taxes, the state's relative refinery isolation, and its environmental fuel programs — also bear on diesel, on top of the reasons diesel costs more than gasoline everywhere (cleaner ultra-low-sulfur production, higher diesel excise taxes, and strong distillate demand).
- How much more is California diesel than regular gas?
- California diesel averaged $6.71 versus $5.55 for regular gasoline in the state — about 115.9¢ more, or roughly 21%.
Source: U.S. Energy Information Administration weekly retail price of No. 2 diesel for California, held in our own database. California is the only state for which EIA publishes a weekly retail diesel price, so it’s the only state diesel page we build — the rest of the diesel vertical is national and regional. Figures are nominal unless the chart’s inflation toggle is on (constant 2025 dollars, CPI-U).