The latest US inflation data shows a generally moderate trend, temporarily easing market concerns about a stronger-than-expected rebound in prices, but it remains short of the sustained cooling signals needed for a shift in Federal Reserve policy.

The Bureau of Labor Statistics reported on Wednesday that the July CPI rose 3.4% year-over-year, a slight decrease from June's 3.5% and the lowest level since March. The core CPI annual rate narrowed from 2.6% to 2.5%, with both indicators aligning with market expectations.

On a monthly basis, the headline CPI increased by 0.1%, the lowest since March, while the core CPI rose by 0.2%, also falling within the expected range.

Following the data release, traders maintained their bets on a 45% probability of a Federal Reserve rate hike in September, with the market pricing landscape showing no significant changes.

Market reaction was generally restrained after the data. The US Dollar Index briefly edged higher, while US stock futures and spot gold both dipped slightly. The 10-year Treasury yield remained near 4.66%, and the Bloomberg Dollar Spot Index softened concurrently. The bond market gave back some of its earlier gains, as some traders may have anticipated the data would be even more moderate than expected.

Housing costs remained the primary support for inflation, acting as the core driver of the monthly increase. Data showed that the shelter component rose 0.1% month-over-month, contributing roughly two-thirds of the total CPI monthly gain. Within this, owners' equivalent rent and rent both increased by 0.3%, while the lodging away from home index fell by 2.8%. The energy component was the main deflationary drag this month, with the overall energy index declining 1.5% month-over-month, led by a 2.9% drop in gasoline prices. The food index rose 0.1% month-over-month, a slowdown from June's 0.2% increase, while the food at home index edged down 0.1%.

Among core components, airline fares surged 2.2% month-over-month. Communication and education indexes rose by 0.6% and 0.5%, respectively. The medical care index increased by 0.4% month-over-month, with hospital services rising 0.5%. Used car and truck prices climbed 0.4% month-over-month. In contrast, the motor vehicle insurance index fell 0.3% month-over-month, extending its 2.0% decline from June. This marked the most significant easing component for the month, as this category has seen substantial increases in recent years, making this consecutive decline noteworthy.

The data met expectations, temporarily lifting the short-term alarm. Structurally, the figures for this month did not send a warning signal of runaway inflation. Goods inflation was flat year-over-year at 0.8%, while services inflation slowed to 3.0% annually. The core CPI annual rate of 2.48% was the lowest since February this year. The overall direction of the data is broadly aligned with the Fed's 2% long-term inflation target.

Fed Chair Powell can now breathe a temporary sigh of relief, but analysts point out that what he truly needs is for the August inflation data to repeat this same moderate performance. Such an outcome, however, still carries considerable uncertainty.

The policy path still depends on subsequent data for confirmation. A single month of data is insufficient to lay the groundwork for a policy shift. Currently, the annual rate of 3.4% remains notably above the Fed's 2% long-term target, and core inflation is still at 2.5%. The monetary policy trajectory is not yet clear. The trend in energy prices also introduces an additional variable. The decline in oil prices in July supported this CPI report, but with oil prices rebounding from late July into early August, it remains to be seen whether the energy component can sustain its current deflationary contribution in August. The Fed's decision on a rate hike at its September meeting will be highly dependent on the evolution of upcoming data. The market's current 45% probability bet on a rate hike means the policy direction remains highly open, and investors need to closely monitor signals from the August inflation and employment data.