The storm rolled in overnight, leaving a fine coat of dust on millions of Sydney cars and buildings.
The BOM said the dust would disappear later today
The Blue Mountains have turned brown with this dust haze we’re seeing around #Sydney at the moment. Expecting this to gradually clear during the afternoon, becoming mostly sunny with a top of 26C, they said.
The dust was picked up in high winds across interior areas of NSW.
Remarkable satellite images showed the scale of the dust storm, stretching 1,500km.
Loose top spoils from drought stricken areas in regional NSW is part of the problem.
Dust over Sydney gives sky a orange glow Wednesday morning
Health authorities warned people with breathing difficulties to stay indoors.