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Index Banded Annual Totals for Swansea:
LOW
103 days
MODERATE
20 days
HIGH
1 day
VERY HIGH
5 days
annual air quality totals for all Swansea monitoring stations

Diffusion Tubes - Nitrogen Dioxide (NO2)

 Brunel Court, Walter Road - facade diffusion tube
2005
Oct 2005 30.60 µg/m3
Nov 2005 41.60 µg/m3
Dec 2005 46.10 µg/m3
Average 2005 39.43 µg/m3
2006
Jan 2006 45.10 µg/m3
Feb 2006 41.20 µg/m3
Mar 2006 35.00 µg/m3
Apr 2006 32.20 µg/m3
May 2006 32.70 µg/m3
Jun 2006 33.70 µg/m3
Jul 2006 25.30 µg/m3
Aug 2006 25.20 µg/m3
Sep 2006 28.70 µg/m3
Oct 2006 38.30 µg/m3
Nov 2006 38.30 µg/m3
Dec 2006 35.70 µg/m3
Average 2006 34.28 µg/m3
2007
Jan 2007 32.10 µg/m3
Feb 2007 41.40 µg/m3
Mar 2007 34.50 µg/m3
Apr 2007 31.20 µg/m3
May 2007 28.90 µg/m3
Jun 2007 29.50 µg/m3
Jul 2007 26.20 µg/m3
Aug 2007 29.10 µg/m3
Sep 2007 31.10 µg/m3
Oct 2007 47.40 µg/m3
Nov 2007 51.00 µg/m3
Dec 2007 42.20 µg/m3
Average 2007 35.38 µg/m3
2008
Jan 2008 35.30 µg/m3
Feb 2008 44.60 µg/m3
Mar 2008 34.40 µg/m3
Jun 2008 23.50 µg/m3
Jul 2008 26.80 µg/m3
Aug 2008 23.90 µg/m3
Sep 2008 40.80 µg/m3
Oct 2008 42.30 µg/m3
Nov 2008 43.50 µg/m3
Dec 2008 41.70 µg/m3
Average 2008 35.68 µg/m3
2009
Jan 2009 43.90 µg/m3
Feb 2009 58.20 µg/m3
Mar 2009 37.20 µg/m3
Apr 2009 34.00 µg/m3
Average 2009 43.33 µg/m3
2012
Jan 2012 45.20 µg/m3
Apr 2012 24.50 µg/m3
May 2012 30.90 µg/m3
Jun 2012 22.90 µg/m3
Jul 2012 20.80 µg/m3
Aug 2012 22.60 µg/m3
Average 2012 27.82 µg/m3
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