Portable air conditioners can be helpful when the temperatures soar and there is no relief. Perhaps it is a result of living where the temperature rarely gets so high. Perhaps the air conditioner is not working. Solving the problem can not only be a matter of comfort, but it can also be life-saving.
When the situation becomes dire an affordable, inexpensive solution is a real help.
One might ask why anyone needs an air conditioner. There were few buildings air conditioned when I was a child. Certainly, an air conditioned home would have been a luxury, perhaps even opulent. But air movement in homes was different. High ceilings allowed hot air to rise above the people inside the dwelling. Fans moved hot air out of windows. Transoms above the interior doors allowed privacy while air flow was not impeded. Modern homes are not so well suited for heat.