I do my 30-minute cardio workout at 7:30 before it heats up too much.
I'm also a beekeeper so I try to work the hives in the morning, there's plenty of lifting and a bee suit gets really hot!.

I exercise at home with the fans on shades pulled in the evening to a youtube walking program her name is Leslie Sansone it's a great exercise class on line

exercise inside, with light weights. walk at night.

Fortunately I have a wooded area at the back of my yard and it has a nice clear path through it. It is cool under the shade of all the trees and so my doggie and I take our walks there.

I too exercise only in a gym, every other day. It is too hot to be outside for me. With exercise, I feel much better.