Millions of people in North America have been warned about the health risks of poor air quality, as toxic wildfire smoke from Canada drifts ... areas around the world. AQI indicates how clean ...
Canada's National Preparedness Level increased ... The Air Quality Index (AQI) for much of northern Minnesota has been ...
The AQI forecast is available in more than 500 US cities, and you can view an interactive map that rates the air quality across the US and Canada. The index is on a scale of 0 to 500 (0 being ...