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.
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