Sitting across the border to your west, I feel your heat, and pain. We just missed three digits on the temp, but the humidity was running neck and neck.
I can work as long as I open the doors in the morning, get it cooled down as much as possible, then keep them closed for the rest of the day.
Would sure be a lot nicer if the morning temps would drop back into the 60's and 50's.
Work safely.