I drove to Melbourne saturday and came back to Sydney yesterday, on the way i thought the ambient temp indicator was broken, it didnt read below 38deg from Yass to Melbourne, but winding the window down and putting an arm outside confirmed it was reading correctly.
On the way back i couldnt believe how much was burnt - areas of highway, signs melted etc, roadblocks everywhere
On the way down there was a layer of smoke from about the Winton area to the outskirts of Melbourne, but the return trip was the strange one - a medium density layer of smoke from just outside Melbourne all the way to Yass (NSW), Yass is where the hills start so you'd have to assume thats why the smoke stopped there. But how crazy is that, 700k's of smoke!