A grey haze hovered over Melbourne's early today.
At Melbourne Airport passengers were delayed for up to three hours when heavy fog forced four early morning flights to be diverted to Sydney and Adelaide.

A Qantas and British Airways flight from Europe, due at 4.45am eventually landed at 8.06am, an Air Mauritius flight due at 5.50am arrived at 9.12am and passengers on flights from Singapore and Los Angeles were also delayed for more than an hour. The fog cleared by 6am 6am and visibility had improved considerably and the airport was able to start operating as usual.