As wildfire smoke swirled, parts of Alberta have endured some of the worst air quality on the planet this week, in particular when it comes to fine particulate matter.
That’s according to data tracked by the World Air Quality Index, a non-profit project that collects information from air monitoring stations around the globe.
“That very poor air quality now puts Alberta on the world map,” meteorologist Jaclyn Whittal reported for The Weather Network, based on data from the index.
On Tuesday, Calgary’s air quality hit a level of 539 on the index, which is well beyond the “very unhealthy” threshold and into the “hazardous”
