I live in Toronto. So far we gotta few smog alerts this summer. Last summer was terrible. Every other day if not every day was a smog alert. I didn't give a ****. I just wore a mask on my face. It was funny cuz when I got home after a 3 hour ride, the filter on it was black.
I really feel bad for our neighbours just 35miles to the south west in Hamilton. They have all the steel factories there. Their average sky colour is pink.