Edmontonians saw a slight improvement in the smoky skies Sunday.
The air quality index in the city had dropped from a 10 – very high risk – to a high-risk 9 by Sunday afternoon.
According to Environment Canada, wildfire smoke is harmful even at low concentrations, and residents in affected areas were told to reduce or reschedule strenuous outdoor activities and watch for symptoms such as coughing and throat irritation.
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