Forest fire-related smog is very bad in Montreal today. Carbon monoxide is at 1500 —300+ is considered hazardous.

Our air purifiers are really working hard. 😷

A partial screen capture of the air quality report in the Carrot iPhone app, showing a total AQI of 214, or “very unhealthy.” A breakdown of pollutants shows that the main contributor is carbon monoxide.
Angelo Stavrow @AngeloStavrow