The lyrics of the song "A Foggy Day In London Town" by Michael Buble was exactly what happen in Sydney 2 days ago. I woke up and thought there was something wrong with my eyes... Everything was blurry. I have seen fog before in Sydney but not as bad as that morning... It was when I arrived at the station near the hospital where I'm attached to that I realised the extent of the fog.

Fog at Blacktown Station. There is suppose to be a huge shopping mall at the background which is obscured by the fog.