According to the WA Bureau of Meteorology, a “lid” was created overnight as a result of an atmospheric inversion, causing the smoke to remain caught just above the “surface” of the city.
An official smoke alert was issued for Perth and Peel on Monday evening following a number of scheduled burn-offs across South West WA.
Locals are being urged to keep their windows closed and to avoid using their air conditioners where possible.
Those who suffer from pre-existing health conditions including asthma, are being told to prepare to execute treatment plans.
The smoke is expected to have cleared by this afternoon.
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