Gas prices in California are set to rise — and it has nothing to do with Iran

California drivers are facing another new cause for gas Prices are rising This spring – and it has nothing to do with the war with Iran or oil production cuts.

Instead, the culprit is switching to Summer gasolinewhich typically results in higher prices in the Golden State before the summer months.

“Gas prices are rising as refineries undergo maintenance before switching to blended fuels in the summer,” said Mary Dodds, director of public affairs for AAA Oregon/Idaho. “The unknown is how geopolitical tensions between the US and Iran will continue to impact crude oil prices. This could mean volatility at the pumps, in addition to the normal seasonal increases in the spring.”

Refineries in California have already begun the transition, as it was the first state in the country to switch to this more expensive, environmentally friendly fuel.

The shift typically results in higher prices at the pump due to a combination of factors, including refinery maintenance, lower production, and the higher cost of producing summer fuel blends, according to the AAA. Additionally, while crude oil prices have been relatively stable, the shift to summer blends has put additional pressure on West Coast prices.

Summer-blend gasoline is formulated with low Reid Vapor Pressure (RVP) to reduce evaporation during high temperatures, a key requirement for combating air pollution in California’s warmer months, the AAA press release states.

Although it is good for the environment, it makes gasoline production more expensive.

For example, while gas prices on the East Coast are relatively stable right now, California drivers are already feeling the pinch. California has the highest gas prices in the country, averaging $4.59 per gallon as of mid-February 2026 — well above the national average of $2.92 per gallon. According to AAA.

The switch to summer blend gasoline is not limited to California, but it affects the state immediately.

While other states begin making the switch closer to May 1, California refiners begin the process much earlier, with some areas needing summer blend fuel as early as April 1.

California’s strict environmental regulations and unique market dynamics mean that drivers in the state are the first to feel the pain of change.

The average price of regular gas in California rose 38 cents from January to February 2026.

In addition to the seasonal shift, crude oil prices have seen fluctuations, although not as volatile as they were last year. Crude oil prices briefly peaked at $65 per barrel in January 2026, and although they have since fallen to $62, they remain above the usual winter price ranges of $55 to $60.

The fuel switch to the summer blend, exacerbated by growing tensions due to the war in Iran and the strategic importance of the Strait of Hormuz, It has already pushed gas prices higher It can lead to more fluctuations in the pump.

If you’re in California, prepare for higher gas prices in the coming months.

Switching to summer blended fuel, Along with the slowdown of refineriesIt is likely to keep prices high throughout the spring and summer. Gas prices, which are already averaging $4.59 per gallon, could rise, and with geopolitical tensions likely to impact crude oil prices, volatility is expected.

Don’t expect relief until the fall, when winter-blended gasoline returns — likely just in time for the holidays.

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