Apparently, none of these Dumbasses ever rode in a LLV/FFV delivering the mail in the summertime.
(Some routes that I've worked, I welcomed having to get out and walk a few blocks!) 
My favorite method at work was to get a worker in the freezer section to bring me a zip lock bag full of ice shavings. This I would put under my hard hat to melt.
Then there are the medic patches that when thrown on the floor and stomped on give off a cold for sprains etc. Wrap one around the neck and hope it lasts an hour or two.
We have no Air at home so I use the thin wraps one gets at the drugstore to bandage whatever, soak them in ice water, freeze and hang them at the top the fans. Works well when the Temp. climbs into the high 80's to low 90's.
We Yankees on the coast need Air only about 6 weeks a year, today, it is off and on, this is not the south where I needed Air every day 6+ months of the year.
Air quality is a big problem worse then the heat. For the last week we have been alerted to stay indoors from 11 am. to 11 pm for those with anyone respiratory problems, the young and the old.