Officials have issued an air quality advisory for Prince George, saying stagnant winter weather has created elevated pollution levels.
Exposure is particularly a concern for people with chronic health conditions.
"Persons with chronic underlying medical conditions or acute infections should postpone or reduce strenuous exercise until the advisory is lifted. Where appropriate, maintain physical distancing. Anyone experiencing symptoms such as continuing eye or throat irritation, chest discomfort, shortness of breath, cough or wheezing, should follow the advice of their health care provider. Staying indoors helps to reduce particulate matter exposure."
The advisory was issued Thursday, shortly after 2 p.m.
High concentrations of fine particulate matter are expected to persist until weather conditions change.