The temperature of this city is already higher than what it should be. It won’t be higher in the next twenty years; it is already higher today. Read how many people are dying and by how many years has the average life expectancy already reduced—already reduced.
What do you mean by adapting to higher temperatures? The AC is on 24, you turn it to 22; that is your adaptation? Ha! Will your lungs adapt to more sulphur dioxide? What are you talking of? Would your brain adapt to lead and arsenic?
Do you know how long biological evolution takes to adapt to something new? It takes millions of years. You won’t adapt so quickly, and you won’t survive a million years to adapt.