It seems the main fire in the Pickering Brook area extended from north of Brookton Highway and east of Canning Road and up to the eastern surrounds of Mundaring Weir. There are no crags in this area that I know of.
The Helena River Valley west of Mundaring Weir seems unaffected (Shark Rock & Darlington Boulders + other minor areas). Churchmans Brook is south of Brookton Highway so its OK. The surrounds of Mtn Quarry is probably all burnt out but this shouldn’t affect any of the climbs.