A major heat wave, described by multiple outlets as a “heat dome,” affects much of the central and eastern United States and is expected to coincide with several World Cup matches during the knockout rounds this week. The outlets report that high-pressure weather over the region traps heat, leading to dangerous conditions outdoors where fans and players gather. Several sources warn that heat index temperatures are likely to be high enough to pose health risks during game days.

NPR and The National Observer both frame the situation as a serious convergence of the World Cup’s later-stage schedule and a widespread spell of extreme heat across the eastern half of the country. Other coverage similarly notes that while heat was anticipated during a summer tournament, the most concerning levels are expected during this week’s matches. One article also indicates the heat dome may extend beyond the U.S., reaching parts of Canada.

Overall, the reporting is consistent that the heat wave is broad, concentrated in the same areas where games are being held or where fans travel, and could require heightened attention to heat safety for attendees and teams.