THE Department of Parks and Wildlife has issued a smoke alert for the Dawesville and Bouvard areas.
The smoke is from prescribed burns carried out today in Yalgorup National Park to manage bushfire risk.
The smoke is expected to clear overnight.
If the smoke is particularly thick, it is recommended people shut doors and windows and turn off air-conditioners.
People with asthma and pre-existing respiratory, cardiovascular illnesses or diabetes should follow their pre-prepared treatment plan.
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 conditions exacerbated by smoke should take precautions in line with their medical advice for these circumstances.
More information on prescribed burns can be found at www.dpaw.wa.gov.au