A fire burning in the suburb is causing smoke over roads and reduced visibility.
The Department of Fire and Emergency Services has issued a smoke alert for Mardella in the Shire of Serpentine Jarrahdale.
A fire burning in the area has caused a large amount of smoke which is impacting the roads.
DFES said motorists in the area should drive slowly and be extremely careful when on the roads.
No road closures are in place.
Police issue 31,000 driving infringements in first month of new AI cameras
Works underway on Rockingham and Safety Bay High School redevelopments
New measles exposure sites revealed in Bunbury
Dawesville man charged after allegedly leaving his elderly Great Dane to suffer painful conditions
Good Samaritan sought by police after helping teen during robbery in Baldivis
Under-16s social media ban now in force
Desperate search continues for missing Bunbury FIFO worker
Passengers now able to use credit, debit cards to tag on and off WA's public transport
New floating jetty speeds up emergency response times for Marine Rescue Mandurah