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Grab Our Research > KEY ENVIRONMENT STATISTICS

CLEAN AIR

Pollutant Averaging Time Unit 2007 2008 2009 2010 2011 2012 2013 2020 Air Quality Target for Singapore1
Sulphur Dioxide (SO2) 24-hour2 μg/m3 80 76 83 94 80 98 75 50
  Annual μg/m3 12 11 9 11 10 13 14 15
Nitrogen Dioxide (NO2) 1-hour2 μg/m3 Not available Not available 103 121 189 154 132 200
  Annual μg/m3 22 22 22 23 25 25 25 40
Carbon Monoxide (CO) 1-hour2 mg/m3 2.3 2.3 2.4 2.7 2.6 2.4 7.5 30
  8-hour2 mg/m3 1.7 1.5 1.7 2.2 2.0 1.9 5.5 10
Ozone 8-hour2 μg/m3 140 103 100 129 123 122 139 100
Particulate Matter PM10 24-hour3 μg/m3 69 57 77 127 55 57 215 50
  Annual μg/m3 Not available Not available 29 26 27 29 31 20
Particulate Matter PM2.5 24-hour3 μg/m3 35 30 39 40 41 42 176 37.5
  Annual3 μg/m3 19 16 19 17 17 19 20 12

 

 

1 Singapore's 2020 air quality targets are benchmarked against the World Health Organisation's (WHO) Interim Targets and Air Quality Guidelines. For SO2 and PM2.5, Singapore's Sustainable Blueprint 2020 annual targets are 15μg/m3 and 12μg/m3 respectively.
2 Maximum 24-hour, 8-hour or 1-hour
3 99th percentile

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