US Inflation Rose 0.4% in October as Gas Prices Fell From $4.41

US inflation rose 0.4% from September to October — slightly above expectations, but a clear cooldown from the previous month's 0.6% increase, as gas prices dropped during the month, according to the Bureau of Labor Statistics.

One number is missing from the release: the usual year-over-year figure. The BLS could not publish it because no data was collected in October 2025 during the government shutdown.

The culprit behind most of the price pressure is energy. Higher energy costs, driven by the Iran war, have kept inflation above an annualized 3% since the war started in late February. In May, inflation hit 4.2% — a three-year high — before fluctuating between 3.4% and 3.7%.

What happened at the pump?

Gas prices cooled slightly in October, falling from an average of $4.41 a gallon at the start of the month to $4.22, according to AAA. On Monday, the average price at the pump dropped below $4 for the first time since July.

The relief is relative. Pump prices remain more than $1 a gallon higher than a year ago.

Diesel tells a sharper story. The fuel that powers trucks, farming equipment, buses and trains costs nearly $2.50 a gallon more than it did last year, though it too has been falling since October. Gas prices have continued to drop.

Why does this land in Washington?

The data arrives just after a midterm election that handed Democrats control of Congress — widely read as a rebuke of Republicans over high prices. In their postmortems, Republicans, including JD Vance, specifically cited frustration over rising gas prices as a reason the party fared poorly.

The politics of the number are straightforward: pump prices move votes, and October's CPI landed with a new Congress on the way.

What is the Federal Reserve doing?

In September, the Fed raised interest rates for the first time since 2023, and it's expected to hike again at its next meeting in December. Higher rates slow the economy by making borrowing more expensive, which can slow inflation. The Fed's target is 2%, which it considers a stable pace for price increases.

The labor market gives the central bank room to act. October's jobs growth surpassed economists' expectations, and the unemployment rate has hovered just above 4%.

But the mechanism is uncertain. Because today's inflation is so closely tied to energy prices, it's unclear how much — or how fast — a rate hike could ease prices. Fed Chair Kevin Warsh said the central bank is committed to bringing price increases down.

"Our job is to ensure that relative price changes in some sectors do not broaden across the economy, and that inflation expectations remain as they are anchored," Warsh said on 28 October.

How are consumers and markets reacting?

Consumer sentiment rose slightly at the end of October as gas prices eased, according to the University of Michigan's Survey of Consumers. The gains weren't evenly shared.

"While sentiment lifted for lower- and middle-wealth consumers, it fell 5% for those with the largest stock portfolios in the wake of a relatively turbulent period in stock markets," said Joanne Hsu, director of the Surveys of Consumers, in a statement. "Moreover, consumers' comments revealed growing anxiety over a possible AI bubble."

The split matters for the months ahead: households that buy gas are feeling better, while those holding equities are uneasy — and the US stock market was dipping over investor skepticism about the influx of AI spending even as sentiment surveys improved.

The takeaway in plain words: inflation is cooling at the margin, energy still drives it, and a December rate hike now looks like the base case.