The Bureau of Meteorology is forecasting consistent northerly winds of up to 35 km/hr later this morning.
These weather conditions usually facilitate the transport of dust from the industrial precinct to the nearby residential area.
Periods of poor to very poor air quality are likely in Brooklyn today (Monday), with the worst air quality expected to occur for the next few hours this morning.
For more information on wind direction please see the Bureau of Meteorology http://www.bom.gov.au/vic/forecasts/melbourne.shtml