Inflation surged 9.1% in June, spiking to its highest level since November 1981 as Americans faced record gas prices, soaring rents and abnormally high grocery bills.

The dismal reading released by the Labor Department on Wednesday will ratchet up pressure on President Biden, who has faced widespread criticism over his muted initial response to inflation as higher prices slammed household budgets.

On a monthly basis, the Consumer Price Index, a closely watched inflation gauge that measures what consumers paid for goods and services, rose 1.3% from May to June.

The core CPI, or the price of goods excluding volatile food and energy costs, was 5.9% on an annualized basis.

The numbers also increase the likelihood that the Federal Reserve will move forward with another steep rate hike at its meeting later this month. The Fed hiked its benchmark interest rate by three-quarters of a percentage point for the first time since 1994 after a higher-than-expected inflation reading in June.

“Across the economy, consumers, business leaders, investors and regulators are all asking the same question: When will inflation peak?” Bankrate senior economic analyst Mark Hamrick said. “Central bankers were caught flatfooted and are now trying to play catch-up and recover some of their bruised credibility.”

As The Post reported, White House officials began a campaign to spin the numbers before they were released – with top Biden economic advisers Brian Deese and Cecilia Rouse noting in a memo that the data “will largely not reflect the substantial declines in gas prices we’ve seen since the middle of June.”

White House Press Secretary Karine Jean-Pierre also warned that the “headline number” for the CPI – meaning its reading with the price of volatile food and energy prices included – was likely to be “highly elevated” due to the gas prices.

There are some signs that inflation is nearing its peak after months of increases. The national average gas price has fallen steadily in recent weeks, dropping to $4.631 per gallon on Wednesday after reaching an all-time high of $5.016 on June 14.

Hours before the Labor Department’s June CPI report was published, a widely circulated fake report claiming inflation hit 10.2% last month sent stocks plunging to session lows.

The Bureau of Labor Statistics tweeted Thursday afternoon that the report was fake.

“We’re aware of a fake CPI release image circulating on Twitter. It is a fake. Stay tuned for the real CPI release tomorrow at 8:30 AM ET,” the department said.