Calgary air quality on Friday among the worst cities on earth
A thick blanket of wildfire smoke over southern Alberta on Friday put Calgary, Airdrie, Banff and Canmore on the list of having some of the worst air quality on the planet.
A thick blanket of wildfire smoke over southern Alberta on Friday put Calgary, Airdrie, Banff and Canmore on the list of having some of the worst air quality on the planet.