How Wood Smoke Affects Winter Air Quality in Cape Town

Cape Town’s winter brings rain, wind, and cosy fireplaces — but burning wood adds a sharp local spike in fine particles. In valleys and suburbs where air does not mix well, that smoke can linger long after the fire dies down.

Localized fireplace smoke

Wood smoke is rich in PM2.5 and chemicals that irritate lungs. Even a few households burning wet or treated wood on the same street can noticeably affect air on a still evening. Neighbours with asthma or young children are especially vulnerable.

Valley pollution traps

Areas tucked between slopes — or downwind of dense housing on calm nights — can hold smoke like a bowl holds water. Sea breezes usually clean coastal air by afternoon, but inland pockets and windless nights see slower recovery.

• Prefer electric or gas heating where possible on high-PM nights.
• Avoid burning rubbish, pallets, or painted wood.
• Ventilate briefly when outdoor air improves, then close up before evening burning starts nearby.