EDMONTON — The province says the Red Deer region in central Alberta has failed to maintain a federal standard for air quality.
Results from Canadian Ambient Air Quality Standards show the area has exceeded the acceptable amount of particulate matter and ozone exposure.
Four other regions are approaching limits.
Environment Minister Shannon Phillips says Alberta is on track to have the worst air quality in Canada if something isn't done.
The Red Deer air zone is now required to develop a response to reduce levels.
The four other zones — the lower Athabasca, upper Athabasca, North Saskatchewan and South Saskatchewan — must develop plans to keep their levels from getting worse.
It is the first year of annual reporting by provinces and territories.
The Canadian Press