US Gas Prices Hit $4.30 as Iran Standoff Blocks Strait of Hormuz

Key facts

• US average gas price reached $4.30 per gallon on Thursday, up 27 cents from a week earlier.
• California gas prices hit $6.01 per gallon, the highest since October 2023, a 30% rise since the war began.
• Diesel in California averaged $7.50 per gallon, a 47% increase since February 28.
• The Strait of Hormuz remains blocked by Iran, with the US imposing a naval siege on Iranian ports.
• Oil prices surged above $100 per barrel, with no reopening date for the strait in sight.
• the national average is $1.12 higher than a year ago, the highest in four years.
• President Trump stated the price hikes are temporary and necessary to prevent Iran from obtaining a nuclear weapon.

Sharpest Weekly Spike in Four Years

The average price of a gallon of gasoline in the United States has surged to $4.30, according to the American Automobile Association, marking a 27-cent increase over the past week alone. This is the highest national average since late July 2022, driven by the ongoing blockade of the Strait of Hormuz and the deepening US-Iran military conflict. Drivers in California are bearing the brunt, with prices hitting $6.01 per gallon on Thursday — a 30% jump since the US and Israel launched their campaign against Iran on February 28. The state's nearly 40 million residents now face the highest pump prices in the nation, a level not seen since October 2023.

Diesel Costs Compound Economic Pressure

Diesel prices have risen even more sharply, averaging $7.50 per gallon in California, a 47% increase since the war began. Diesel is critical for the economy, powering the trucks and trains that deliver consumer goods across the country. The broader spike in energy costs is reigniting inflation fears and injecting fresh uncertainty into an economy already grappling with high interest rates. Analysts warn that sustained high fuel prices could ripple through supply chains, raising costs for everything from food to manufactured goods.

Strait of Hormuz Blockade Remains Central Sticking Point

The price surge follows a brief period of easing when markets hoped for a diplomatic resolution. Those hopes faded after it became clear that Iran would not reopen the Strait of Hormuz, a narrow waterway through which about 20% of the world's oil passes. The US has responded with a naval siege on Iranian ports, while Iran continues to block the strait. President Donald Trump has rejected Tehran's offers of a preliminary deal to restore passage, insisting that time is on his side. The standoff shows no signs of resolution, with oil prices now above $100 per barrel.

Trump Defends War as Temporary Sacrifice

Facing record-low approval ratings amid growing public discontent, President Trump has doubled down on his argument that higher fuel prices are a necessary price for national security. "And you know what? And we're not going to have a nuclear weapon in the hands of Iran," he told reporters on Thursday when asked about the latest price increase. The administration and its allies have sought to frame the economic pain as temporary and worthwhile to achieve the military campaign's objectives. However, with no end to the conflict in sight and the Strait of Hormuz still closed, the political fallout is mounting.

California Leads Nation in Price Pain

California's gasoline prices have surged 30% since the war started, reaching $6.01 per gallon — the highest in the continental US. Diesel in the state has climbed even more steeply, up 47% to $7.50 per gallon. The state's unique fuel blend requirements and higher taxes amplify national trends, making it a bellwether for the severity of the crisis. For comparison, the national average of $4.30 remains $1.12 above the same period last year.

Outlook Uncertain as Diplomatic Channels Remain Closed

With Iran refusing to reopen the Strait of Hormuz and the US maintaining its naval blockade, the immediate outlook for fuel prices remains grim. Analysts see little chance of a breakthrough unless one side makes a major concession. The economic and political stakes are high: the White House faces growing domestic pressure as voters feel the pinch at the pump, while the military campaign continues without a clear endgame. For now, American drivers are left to absorb the highest fuel costs in four years, with no relief in sight.

The bottom line

• US gas prices hit $4.30 per gallon, the highest in four years, after a 27-cent weekly spike.
• California leads with $6.01 per gallon for gas and $7.50 for diesel, both up sharply since the war began.
• The Strait of Hormuz blockade by Iran and the US naval siege are the primary drivers of the price surge.
• Oil prices remain above $100 per barrel with no diplomatic resolution in sight.
• President Trump defends the war as necessary to prevent Iran from obtaining nuclear weapons, despite record-low approval ratings.
• Sustained high fuel costs risk reigniting inflation and deepening economic uncertainty.