The ministry says smoke levels can change rapidly, and there may be large variations over short distances.

If you’re experiencing difficulty breathing, chest pain or discomfort, or a sudden onset of a cough/irritation of airways, contact your health care provider immediately. Also, avoid strenuous outdoor activity, especially along busy traffic corridors.

Exposure is of particular concern for infants, the elderly and those who have underlying medical conditions such as diabetes, lung, or heart disease.

As part of Prince George’s Clean Air Bylaw, all open burning, including backyard and land clearing burning is currently prohibited.

During these advisories, recreational fires and street sweeping activities are also prohibited, as well as the use of wood-burning appliances, with the exception of sole wood burning heat users.

Industry is being asked to reduce emissions wherever possible during the smoke advisory.

For the latest information regarding the current condition of air quality, visit