“Yes, in this type of weather, the [artificial] turf is going to be 20-25 degrees surface temperature hotter than if they were practicing in the grass,” John Marshall athletics director Robert Chavanek said.

37 band members in Marshall County overwhelmed by heat, taken to hospital

https://wchstv.com/news/local/developing-band-members-overwhelmed-by-heat-taken-to-hospital-in-moundsville