That corresponds to a wet-bulb temperature of 34.7C. A wet-bulb temperature of 35C would be fatal after a few hours because it is impossible to lose body heat.
http://www.nytimes.com/2015/06/07/opinion/sunday/the-deadly-combination-of-heat-and-humidity.html
I'd estimated 34.66 wet bulb, but was just guessing at the air pressure. 35WB is the upper limit for humans, but I believe many mammals are less able to deal with extreme heat. If the locals relied on sheep, goats or cattle they may need to import some food PDQ.
Brown outs, where the electrical supplies are hampered by overuse of the grid or poor cooling at generating plants is deadly for AC and refrigeration compressors. When they try to start without enough voltage they require extra amperage which overheats the start windings and burns out the units. This could be deadly for those relying on the HVAC system as no one will be available to make repairs until the danger has past.
I can't imagine any way to prepare for such an eventuality other than shutting down any compressor based system at the first sign of a brownout (dim lamps, small TV picture, flickering lights), and keeping them off line until the situation has resolved itself.
I was in California when Enron was playing with grid voltage and the damage done to commercial refrigeration systems alone was unbelievable.
Terry
