Sydney's 'choking' smoke: Why and till when will this continue?

Meteorologist Bimal KC explains the reasons behind the persistent presence of smoke in Sydney.

Commuter ferries sail past the Sydney Harbour Bridge as smoke haze from bushfires in New South Wales blankets the CBD. Source: AAP

Source: Supplied

Source: facebook/ Bureau of Meteorology

Source: Queensland Fire & Emergency

Some Sydney-siders are wearing face masks to help cope with the smoke. Source: AAP

Poor Air Quality forecast alert. Source: Bureau of Meteorology

NSW Fire and Rescue crews battle a blaze near Batemans Bay and Ulladulla. Canadian crews have volunteered to help their comrades down under. Source: AAP