I believe teams are responsible for bringing their own heating and cooling gear to away games. I wonder if we could get away with some giant tents that obstruct the fan views (although in Miami typically on our sideline I guess it's mostly Bills fans)
But I did see Josh under a tent at times, I know we have fans, I believe we bring all that stuff ourselves. It sucked to see the heat impact the game yesterday, but I don't think things are gonna change (maybe in another 10-20 years if climate change makes it truly dangerous / unbearable, those stadiums will just be all indoors.)