The San Francisco 49ers are set to face the Arizona Cardinals in what is expected to be the hottest game in Levi's Stadium history. Despite the extreme heat forecast, the NFL declined the 49ers' request to switch to white jerseys for the game. In response to the denied request, the team will wear throwback uniforms from 1994. Coach Kyle Shanahan expressed disappointment over the NFL's decision, highlighting the challenging conditions players will face on the field. Fans are concerned as temperatures are predicted to soar, causing ticket prices to plummet and raising health concerns in the region ahead of the match.