FIFA announced a policy change prohibiting fans from bringing reusable water bottles into World Cup stadiums, citing safety concerns in what the organization describes as a late adjustment to security protocols.

The decision comes as new analysis reveals that more than one-third of matches scheduled for the 2026 World Cup face dangerous heat and humidity conditions. Weather data examination of planned venues indicates elevated health risks for players and spectators during competition periods.

Heat safety experts have criticized FIFA's bottle ban policy, warning it could exacerbate health risks for fans attending matches in potentially dangerous weather conditions. The experts characterized the policy as problematic given the documented heat concerns at multiple tournament venues.

Meanwhile, host cities are implementing extensive security preparations for the tournament. Monterrey, which will host four World Cup matches, has deployed advanced security measures including surveillance technology and specialized equipment as part of comprehensive safety planning.

The 2026 World Cup will be held across multiple venues in North America, with matches scheduled during summer months when heat and humidity levels typically peak in many host cities. Tournament organizers are balancing security requirements with health and safety considerations as the event approaches.