Nine-year-old Carter Vigh was having a great day last July 11, visiting a waterpark, enjoying a picnic lunch and playing soccer with other kids at a day camp run by his mother, Amber Vigh.

At the time, wildfires were raging throughout parts of British Columbia and so Amber checked the air quality index on a weather app that morning to make sure it was safe for Carter — who had asthma _ to play outside.