U.S. consumer prices accelerated in August, with the Labor Department reporting a 0.4% monthly increase in the Consumer Price Index following a 0.1% gain in July. The pickup was driven largely by higher gasoline and broader energy costs, which added to household expenses during the month.
On a year-over-year basis, the CPI rose 3.4% through August, matching the annual pace recorded in July. While headline inflation remained steady on a 12-month basis, the composition of price pressures shifted as energy costs took on a larger role.
Excluding the more volatile food and energy components, core CPI increased 0.3% in August, up slightly from a 0.2% monthly gain in July. Over the past 12 months, core prices advanced 2.4%, easing from a 2.5% annual increase in July. The data indicate that underlying price pressures continued to moderate even as headline inflation was pushed higher by fuel costs.
Gasoline was the single largest contributor to August inflation. The gasoline index rose 3.9% for the month and accounted for more than one-third of the overall monthly increase in the CPI. The broader energy index climbed 2.1% in August, underscoring the extent to which fuel costs influenced the latest inflation reading.
Energy prices have moved sharply higher over the past year. The energy index increased 16.3% over the 12 months through August, led by a 27.4% jump in gasoline prices. This substantial rise in fuel costs has been a major source of renewed pressure on headline inflation, even as measures of underlying inflation have continued to cool.
Shelter costs, a key component of the CPI because of their significant weight, rose 0.3% in August after a 0.1% increase in July. Food prices advanced 0.1% on the month. Within that category, prices for food away from home increased 0.3%.
Several other categories also recorded monthly price gains. These included communication services, lodging away from home, airline fares, education costs, and prices for used cars and trucks, all contributing incrementally to the overall inflation profile for August.
Together, the figures show that rising energy prices have re-introduced upward pressure on headline inflation, even as core inflation continues to trend lower compared with earlier in the year.
