The Department of Parks and Wildlife Service has issued a smoke alert for residents in Collie and surrounds.
This smoke is due to prescribed burns being carried out by the Parks and Wildlife Service and is expected to clear by mid-morning tomorrow.
Prescribed burning is carried out to protect lives and property from bushfires.
Benefits include lower fuel loads across the South West, helping to reduce the severity and size of bushfires.
Residents are reminded to shut doors and windows and turn off air-conditioners if the smoke is particularly thick.
Motorists should also take care when driving by turning on headlights and traveling at appropriate speeds.
People with conditions exacerbated by smoke such as asthma should take precautions in line with their medical advice for these circumstances.
Those with pre-existing respiratory or cardiovascular illnesses should follow their pre-prepared treatment plan.
Information on prescribed burns carried out by Parks and Wildlife Service can be found at https://www.dpaw.wa.gov.au/management/fire/prescribed-burning/burns.
To stay up to date on the situation, visit emergency.wa.gov.au or call 13 DFES.