Consistent mid to high 90's here. Don't know what the heat index is, besides hot. Home AC went out over the weekend - part finally came in, and AC tech. was able to fix it today.
I can keep the shop around 83, provided the roll up door stays shut, and I can work on something inside. If I have to open the door for any reason, either for a larger job, or just to bring materials in, it'll shoot up to the high 80s in a matter of minutes, especially in the AM, when the sun is shining against the door. I have to work in sleeves and pants, too. I'm just doing TIG stuff though, so it isn't all bad. I really feel for some of the guys doing stick welding jobs outside, where they are in this sun and humidity, having to wear full leathers.