Melbourne managed to have one of the worlds worst air qualities this morning (between around 12:00 – 1:00 am) with a one hour average of 411.5 ug/m3 of Fine Particulate Matter (PM2.5) due to the smoke from Bushfires in NSW and in Gippsland, VIC being driven towards the city due to the wind directions. Whilst this is nothing compared to what the fire affected communities are experiencing it is fairly unusual for Melbourne, and this level of particulate matter in the air can actually be hazardous in some cases.
This picture is not a particularly good photo as it was taken during the way home (part of a failed timelapse) where by screen was dirty, the shutter speed was wrong and a whole range of other issues but it does show the significant amount of smog in the air. To put it in perspective, the one hour average for around the time I was coming through the city was around 159.6 ug/m3.
Photo specs kind of don't matter, but it was a Nikon D610, Nikkor 28-300mm @ 52mm, f/29, 1/40 seconds, ISO 100 (the settings were weird because I was trying out the Arsenal and let it work out what settings to use).