Current issues

Brooklyn air monitoring results for March and April 2015


Six days exceeded the PM10 air quality objective in Brooklyn during March and April.

Observations on the air monitoring results

After 12 months of consistent and gradual improvement, the air quality results for Brooklyn during March and April were not as promising, showing that six days exceeded the PM10 air quality objective and providing a cautionary reminder that sources of air pollution in the local region are still strong enough to frequently exceed air quality standards. This most commonly occurs when weather conditions allow the transport of air pollution from the Brooklyn Industrial Precinct to the nearby residential area south of Geelong Road during consistent northerly winds with not a lot of recent rain.

All of the six days that exceeded the PM10 air quality objective during March and April occurred on weekdays, with poor or very poor air quality levels recorded on each of these mornings during northerly winds. Smoke impacts believed to be from planned burns were picked up by the air monitoring instruments in Brooklyn on 31 March and 13 April and contributed to these days exceeding the PM10 air quality objective.

Despite the poor results for March and April, the tables below show that fewer days have exceeded the PM10 air quality objective in Brooklyn during 2015 to the end of April than for any preceding year of monitoring except the extremely wet start to 2011.

Statistics

Air monitoring statistics for Brooklyn Industrial Precinct March–
April 2015
2015 so far
Number of days that exceeded the PM10 air quality objective 6 7
Number of weekdays with consistent northerly winds and no recent rain 3 7
Number of hours of poor air quality 54 84
Percentage of poor air quality occurring between 7 and 11 am 60% 60%
Percentage of poor air quality occurring during northerly winds 81% 80%
Number of poor air quality alerts issued for Brooklyn 8 9
     
List of days that exceeded the PM10 air quality objective (March–April 2015)
16 March 2015 31 March 2015
17 March 2015 1 April 2015
19 March 2015 13 April 2015

Number of days that exceeded the PM10 air quality objective
March–April 2015 6 2015 so far (up to April) 7
March–April 2014 3 2014 (up to April) 16
March–April 2013 5 2013 (up to April) 10
March–April 2012 9 2012 (up to April) 11
March–April 2011 3 2011 (up to April) 6
March–April 2010 5 2010 (up to April) 10
       
Number of weekdays with consistent northerly winds and no recent rain
March–April 2015 3 2015 so far (up to April) 7
March–April 2014 9 2014 (up to April) 18
March–April 2013 7 2013 (up to April) 12
March–April 2012 6 2012 (up to April) 12
March–April 2011 8 2011 (up to April) 13
March–April 2010 11 2010 (up to April) 18
       
Rainfall (mm)
March–April 2015 52.4 2015 so far (up to April) 128.2
March–April 2014 85.6 2014 (up to April) 110.0
March–April 2013 41.6 2013 (up to April) 99.4
March–April 2012 79.6 2012 (up to April) 142.8
March–April 2011 71.6 2011 (up to April) 362.0
March–April 2010 90.0 2010 (up to April) 138.4

Page last updated on 19 May 2016