I've covered NFL games for over 15 years, and this was absolutely THE coldest game of my career. It was brutal, with wind chill temps around -18-20 degrees F.
This was a shot of a fan bundled up, with her breath highlighted. Technical details: Sony a9ii, Sony 70-200 f2.8 at f3.5, ISO 2500 at 1/1600th sec.

Here's my caption for the image describing it a bit more:
Jan 13, 2024; Kansas City, Missouri, USA; A fan is bundled up against the below zero temperatures and wind chill in a 2024 AFC wild card game between the Kansas City Chiefs and Miami Dolphins at GEHA Field at Arrowhead Stadium.