U.S. inflation accelerated to 4.2% in May, the fastest pace since April 2023, driven by a 23.5% surge in energy prices. Gasoline averaged $4.24 per gallon, up more than $1 from last year, as the Iran conflict disrupted supply chains. The Consumer Price Index jumped 0.5% over the month alone, intensifying pressure on households already coping with stagnant wages.

Adjusted hourly earnings have fallen 0.7% over the past year, wiping out recent pay gains. Retailers like Dollar General reported customers pulling back on food purchases and gravitating toward cheaper essentials, even among households earning over $100,000. Companies are absorbing higher energy costs rather than passing them to consumers, who remain price-sensitive after pandemic-era disruptions.

The Federal Reserve faces a delicate calculus. While core inflation rose 2.9% year-over-year, excluding volatile food and energy, durable goods prices stayed relatively tame. Vehicle prices are just 0.2% higher than last year, suggesting Trump-era tariffs have largely been priced in. However, airline fares jumped 2.7% monthly amid jet fuel costs projected to reach $100 billion industry-wide.

Artificial intelligence infrastructure adds upward pressure on electricity costs, which rose nearly 6% as data centers strain power grids. Campbell's Soup plans 5-6% price increases citing energy and packaging material costs funneled through the Strait of Hormuz. The inflation spike may prove temporary if Middle East tensions ease, but persistent drought threatens agricultural supply chains and future food inflation.