If you were wondering why food is so expensive in California here is one of the reasons you can thank Trump for

begin quotes from AI Overview

 

As of September 2026, the average price of diesel in California is $7.83 per gallon. 

Prices have climbed to record-high levels due to ongoing geopolitical conflicts affecting global refinery capacities and oil supply routes. This marks a major increase from last month when the average hovered around $6.87 per gallon. 

According to daily data provided by AAA Fuel Prices, here is how today's averages compare to recent benchmarks:

Current Average: $7.83 / gallon
Yesterday's Average: $7.83 / gallon
One Week Ago: $7.37 / gallon
One Month Ago: $6.87 / gallon
One Year Ago: $5.14 / gallon 

Refineries in California face less competition than those elsewhere in the nation, contributing to what experts call “The California 'premium' over the rest of the U.S. for diesel... it's now averaging $1.58/gallon...” -- [SF Chronicle].

If you are planning a route or managing a fleet, let me know if you would like to look up the average diesel prices for a specific California county or metro area, or if you want to compare it to neighboring states.

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  AAA Gas Prices

  California average gas prices - AAA Fuel Prices

  Regular, Mid-Grade, Premium, Diesel. Current Avg. $5.8658, $6.0807, $6.2854, $7.8276. Yesterday Avg. $5.8602, $6.0759, $6.2814, $7...
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  AAA Gas Prices

  State Gas Price Averages

  State Gas Price Averages. Regular | Diesel | |. California | $5.8658 | $7.8276 | | Colorado | $4.1989 | $5.5434 | $4.3354 | $5.931...

  

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