# Canadian air quality concerns

> Developing situation record from CLSTR: https://clstr.news/situations/canadian-air-quality-concerns
> Updated: 2026-11-10T20:12:28.000Z. Sources: 3. Developments: 2.

Air quality warnings and advisories have been issued in different Canadian regions due to smoke. In Ottawa, Environment Canada issued a warning as smoky skies impacted the area, prompting the Ontario Humane Society to emphasize emergency preparedness for people and pets.

In the Duncan area, an advisory was issued following elevated levels of fine particulate matter. Officials attributed the smoke to several factors, including agricultural burning and prescribed pile burning conducted by Mosaic Forest Management in the Cowichan Lake area. These burns were part of a fire hazard abatement strategy approved by the BC Wildfire Service, though local topography may have channeled the smoke toward Duncan.

## Timeline

### 2026-11-10: Duncan air quality advisory issued following prescribed burns

An air quality advisory was issued for Duncan, Canada, due to smoke from prescribed forest management burns and agricultural activity in the Cowichan Lake area.

3 sources. https://clstr.news/cluster/duncan-air-quality-advisory-issued-following-prescribed-burns

### 2026-10-25: Ottawa faces air quality warnings due to wildfire smoke

Environment Canada has issued an air quality warning for Ottawa due to wildfire smoke, prompting calls for emergency preparedness for pets and owners.

2 sources. https://clstr.news/cluster/ottawa-faces-air-quality-warnings-due-to-wildfire-smoke

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Cite as: Canadian air quality concerns. CLSTR, https://clstr.news/situations/canadian-air-quality-concerns