Smog advisories were widespread in southern Ontario Wednesday.
With Ontario and Quebec baking in high heat and humidity, the Ontario Lung Association says people with lung conditions shouldn't take any chances.
"Anybody who has a lung condition, or really, any kind of chronic health condition, [is] at greater risk," says Chris Haromy, a spokesman for the organization.
"These hot days generally come along with more air pollution, the humidity and also ... allergens, et cetera, that can irritate the lungs for a lot of people."
Daytime highs in many communities in the south of both provinces are forecast at above 30 degrees celcius until Thursday. The humidity is making it seem more than 40 degrees.
Smog and humidex advisories were widespread on Wednesday.
Haromy said the heat only adds to other factors people with lung conditions already face, as well as sapping their energy.
If the air quality outside is poor, the association recommends:
- Staying in a cool, clean environment.
- Keeping windows and doors closed in your home and vehicle.
- If necessary, run your air conditioning/ventilation system, and replace the air filter regularly.
- Minimize outdoor activity.
- Only exercise indoors in a cool, clean environment.
Haromy says even with these precautions, people with asthma, chronic obstructive pulmonary disease, lung cancer or other lung conditions should monitor themselves for signs their symptoms are flaring up.
"And if they do, to follow their action plan prepared by their physician or health care professional to get it under control as soon as possible," Haromy says.
For more information, Haromy says people can call 1-888-344-5864.