Metropolitan cities' scorecard for particles (PM2.5) NEPM 24-hour standard, based on analysis of air quality index values, 2009-2014

Component
Summary
Grade
Very poor Poor Fair Good Very good
Confidence
In Grade In Trend
Comparability
To previous years

Average percentage frequency distribution: very good 71; good 29; fair <1; poor <1; very poor 0

Year(s): 
2016
5
Improving
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Average percentage frequency distribution: very good 91; good 8; fair 1; poor <1; very poor <1

Year(s): 
2016
5
Stable
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Average percentage frequency distribution: very good 77; good 17; fair 5; poor 1; very poor <1

Year(s): 
2016
5
Deteriorating
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Average percentage frequency distribution: very good 58; good 29; fair 10; poor 3; very poor 1

Year(s): 
2016
5
Deteriorating
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Average percentage frequency distribution: very good 78; good 17; fair 5; poor 1; very poor <1

Year(s): 
2016
5
Improving
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Average percentage frequency distribution: very good 69; good 27; fair 3; poor 1; very poor <1

Year(s): 
2016
5
Stable
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Average percentage frequency distribution: very good 68; good 30; fair 1; poor <1; very poor <1

Year(s): 
2016
5
Deteriorating
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Average percentage frequency distribution: very good 64; good 32; fair 3; poor <1; very poor <1

Year(s): 
2016
5
Deteriorating
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Darwin began measuring PM2.5 in 2011. Melbourne Alphington station measured every 3 days until February 2014. Assessment trend is determined from trend during assessment period.

Keywood MD, Emmerson KM, Hibberd MF (2016). Ambient air quality: Metropolitan cities' scorecard for particles (PM2.5) NEPM 24-hour standard, based on analysis of air quality index values, 2009-2014 . In: Australia state of the environment 2016, Australian Government Department of the Environment and Energy, Canberra, https://soe.environment.gov.au/assessment-summary/ambient-air-quality/metropolitan-cities-scorecard-particles-pm25-nepm-24-hour, DOI 10.4226/94/58b65c70bc372