How climate change is affecting the NFL

February 10, 2025

If you were among the 68,500 fans in the stands to watch the National Football League’s (NFL) San Francisco 49ers host the Arizona Cardinals on Oct. 6, 2024, you could be forgiven for forgetting that football is a fall and winter sport. Temperatures at game time that day peaked at 98°F—hot enough that the 49ers swapped out their uniforms, switching from red jerseys and gold pants to red jerseys and white pants, to reflect more heat away. “Hopefully [that] helps a little,” 49ers coach Kyle Shanahan told ESPN before the game.

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