When I came from Southern California to Tacoma in 1985, you could. Manage fine without air conditioning and almost everyone did. There’s be one, maybe two miserable weeks in the upper 80s and 90s when you were very glad for fans and wet towels, then to y ended and it was back to life as usual.
Now there’ll be multiple weeks in a row with 90s and 100s, where it doesn’t cool off much at night. And there’ll be air pollution from forest fires. Air conditioning is a necessity for anyone with any condition that temperatures and pollution can intensify, and it’s at least very welcome for anyone else.