Sydney shrouded in bushfire smoke as Melbourne swelters

Air quality in Sydney and surrounds has been classed 'hazardous', as parts of Victoria set to face hottest October day on record

Smoke from fires burning in northern New South Wales has triggered health warnings for Sydney and other parts of the state, with conditions expected to persist into the weekend.

It comes as parts of Victoria were forecast to reach their hottest October day on record and Melbourne was set to record its hottest October day since 2015.