Air quality warning: How bad is the wildfire smoke?

Southern Ontario is under an air quality warning due to wildfire smoke for a second straight day. But how bad is it? How widespread is the smoke? And what are health experts saying? Postmedia’s Ryan Goodison has the answers. HOW BAD IS THE SMOKE? As of Thursday morning, Environment Canada has issued an orange-level air quality warning –the second-highest level in its three-colour system –indicating conditions likely to cause significant health impacts.Smoke from wildfires in n