An air quality advisory has been issued for eastern Metro Vancouver and the Fraser Valley due to particularly hot weather and pollution.
In a news release issued Thursday afternoon, Metro Vancouver cautioned the public to “avoid strenuous outdoor activities during mid-afternoon to early evening, when ozone levels are highest.”
This week’s heat wave has caused increased levels of ground-level ozone, it warned.
Ground-level ozone is produced when pollutants produced by burning fuels – like gasoline and oil from vehicles and lawn mowers – react to sunlight.
“Exposure is particularly a concern for people with underlying conditions such as lung disease, heart disease, chronic obstructive pulmonary disease (COPD) including bronchitis and emphysema, as well as asthma, and diabetes,” it added.
Pregnant women, infacts, children, and older adults could also be at elevated risk for ill-effects.
High levels are expected to continue until Friday, the advisory states.
Strenuous outdoor activities are discouraged, unless in the morning or early afternoon – lest it becomes difficult for a person to breathe.
“Consider choosing easier outdoor activities such as walking instead of running where you don’t have to breathe as hard,” it encouraged.
Anyone experiencing symptoms of chest discomfort, shortness of breath, coughing or wheezing should safely seek prompt medical attention.
Metro Vancouver reminded people to stay cool, hydrated, and to seek relief indoors with air conditioning.