Current issues

Brooklyn air monitoring results for July and August 2014


Three days exceeded the PM10 air quality objective in Brooklyn during July and August.

Observations on the air monitoring results

The results for July and August are a slight improvement on the same period last year, when there were four days that exceeded the objective. This continues the trend of air quality improvements – relative to recent years – that have been recorded in Brooklyn since the middle of February in 2014.

The statistics show Brooklyn has experienced five-year seasonal peaks in the number of dry days with consistent northerly winds during autumn and winter this year. Those are the weather conditions that help transport PM10 particles from the Brooklyn Industrial Precinct to the neighbouring residential area to the south. Given the prevalence of those weather conditions we would expect an increase in poor air quality in Brooklyn, so it is encouraging to report there have been fewer poor air quality days during autumn and winter this year.

The gradual improvement in Brooklyn’s air quality during the 2014 autumn and winter seasons compared to the same seasons in previous years is most likely due to a combination of better dust management on industrial sites and targeted works to reduce road dust. 

Forecast for the rest of 2014

Despite the improvements during autumn and winter, it is still looking like there will be 25 to 30 days exceeding the PM10 air quality objective in Brooklyn for a third year in a row, which would mean Brooklyn’s air quality remains worse than anywhere else monitored by EPA in Victoria. 

Statistics

Air monitoring statistics for Brooklyn Industrial Precinct July–August
2014
2014 so far
(up to Aug)
Number of days that exceeded the PM10 air quality objective 3 21
Number of days with consistent northerly winds and no recent rain 14 49
Number of hours of poor air quality 22 177
Percentage of poor air quality occurring between 7 and 11 am 77% 60%
Percentage of poor air quality occurring during northerly winds 77% 73%
Number of poor air quality alerts issued for Brooklyn 6 25
     

List of days that exceeded the PM10 air quality objective (Jul–Aug 2014)
21 July 2014
31 July 2014
15 August 2014

Number of days that exceeded the PM10 air quality objective
July–August 2014 3 2014 so far (up to August) 21
July–August 2013 4 2013 (up to August) 21
July–August 2012 5 2012 (up to August) 19
July–August 2011 2 2011 (up to August) 9
July–August 2010 6 2010 (up to August) 26

Number of days with consistent northerly winds and no recent rain
July–August 2014 14 2014 so far (up to August) 49
July–August 2013 13 2013 (up to August) 42
July–August 2012 16 2012 (up to August) 42
July–August 2011 10 2011 (up to August) 31
July–August 2010 9 2010 (up to August) 36

Rainfall
July–August 2014 50.2 2014 so far (up to August) 224.6
July–August 2013 85.4 2013 (up to August) 285.6
July–August 2012 70.2 2012 (up to August) 349.6
July–August 2011 34.6 2011 (up to August) 470.2
July–August 2010 82.0 2010 (up to August) 280.6

Page last updated on 19 May 2016