I'm making the call whether to ride or not on a day-to-day basis. I drove again today as it was expected to be even hotter than yesterday. The heat index is sitting at 108 right now and got as high as 111. It feels like a sauna outside. The morning commute wouldn't be so bad, but I'm concerned about getting heat exhaustion in the afternoons. I went to the gym this morning, rode a spin bike for a while and lifted weights. Also walked for an hour at lunch. That's probably what I'll be doing until the weather moderates.