We are straddling a very fine line today with hot temperatures across the metro. Below is a helpful chart that can guide you to making good choices when deciding how to workout with high summer temps.. The best time of the day to workout when it's hot is before 9am and after 6pm when the sun isn't as intense.
I know that experienced exercisers ignore these conditions, but just merely being outside today puts us all in the "Danger" category. Proceed with caution and drink plenty of water, coconut water, or sports drinks. Avoid alcohol and ALWAYS wear sunscreen. Good choices on days like today are what will allow you to restore and retain good health for many, many years.