Earlier quoted context omitted.
How common is air conditioning in Paris? What proportion of homes have air conditioning, either built-in or portable? How about businesses? Does Paris have sufficient "cooling stations", as in, large, air conditioned, public-friendly businesses like malls or community centers?
Fairly uncommon in homes (although I wouldn't go as far as the sibling comment that it's only for very upscale homes—I know plenty of people who are getting equipped). Because the unit has to be outside, there are many historic buildings where you can't install AC. It's less of a problem in other parts of France. Businesses open to the public and offices almost universally have AC, though, except maybe for mom and po…
The best place to go during weather like this is actually a grocery store: Picard, which only sells frozen food and so you get the escaped chill from the freezers.