Is air conditioning not common for a reason?
Here in Germany the reasons are:
1. No real need to invest so much money as the number of truely hot days is limited per year. In the states most states have AC running from end of May-end of August. heat waves are hit or misses. So far we have had only 2 days of REALLY unbearable heat, but the house was cooler vs outside.
2. Lower humidity. it is hot, but due to the lower humidity at times not so oppressive. You can "deal with it" better
3. Energy costs. Many Germans I know woud rather suffer vs pay a cent.
4. The belief that a draft or cold AC Air will cause a stiff neck, a cold or sudden death ( sarcasm here but how some react you would believe it)
5. Homes do not have forced air heat so installing AC is a different game
6. In Germany AC is now more wide spread it is avail in blds/offices more than one would think
7. Homes and bldgs are greatly insulated where shutting external blinds to darken rooms will keep things cool. This only works as the dew points can be much lower. If it's a humid day doesn work so much.
8. Germany has thousands of public pools, so due to the work life balance here, many are there or in lakes during heat waves.
I have lived here for decades, had many heat waves, we are able to deal with it, by closing windows and completly darking windows on sun side with external heat resistent blinds.. and open up at night when it does usually cool a bit. if it gets muggy a regular fan will work. I recall back in the states a fan was worthless iin florida etc.. here they help.