A smoke alert has been issued for Perth's southern suburbs through to Mandurah.
The smoke is a result of Parks and Wildlife Service prescribed burns and private property burns east of Perth.
Smoke is likely to increase throughout the day and may become trapped under an inversion Friday night.
The inversion is expected to lift by late-Saturday morning and smoke will begin to clear.
WHAT TO DO:
• If the smoke is particularly thick, it is recommended people shut doors and windows and turn off air-conditioners.
• Smoke may reduce visibility on some roads and motorists should take care, turn on headlights and travel at appropriate speeds when travelling in these areas.
• People with asthma and pre-existing respiratory or cardiovascular illnesses should follow their pre-prepared treatment plan.
• People with conditions exacerbated by smoke should take precautions in line with their medical advice for these circumstances.
Southern suburbs man claims $2.5 million Lotto win
Wanted man possibly in Mandurah or Rockingham areas
Big fines for three fisherman caught with too many mullet, undersized crabs
Brand new six-storey hospital to replace Peel Health Campus
Drug and Firearm Squad swarm Meadow Springs home
Wanted woman known to frequent Mandurah, Rockingham, West Pinjarra areas
Waikiki Beach Hotel to go ahead after liquor licence approved
Man found critically injured outside Baldivis pub
Dawesville man charged with 38 child sex offences