Extreme heat poses a significant risk to players, fans, and officials, particularly in cities like Monterrey, where temperatures can exceed 90°F (32°C). High humidity in northeastern U.S. cities such as New York and Philadelphia could exacerbate heat stress, increasing the risk of dehydration and heat-related illnesses. Severe thunderstorms in the U.S. could lead to match delays or suspensions, impacting the tournament schedule. Fans attending outdoor matches in open stadiums may face discomfort and potential safety risks due to these weather conditions.