Overview
- The UN climate secretariat issued a public warning on Monday that about one in four World Cup matches could be played in dangerous heat driven by human-caused warming.
- The agency said players will receive medical support but warned the greatest risks are for fans and workers outside stadiums in fan zones, queues, transport hubs and car parks.
- FIFA has introduced a tiered heat plan with real-time wet-bulb globe temperature monitoring and mandatory three-minute hydration breaks each half, but scientists and doctors are pushing for clearer postponement thresholds.
- Heat is expected to change match play by slowing tempo, prompting earlier substitutions, increased drinking breaks and wider use of cooling towels, which could also affect broadcast presentation.
- Independent analyses have flagged specific venues such as Miami, Kansas City, New York/New Jersey and Philadelphia as higher risk, and experts say the tournament’s larger 48-team format raises exposure for millions of attendees and workers.