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

Diffusion Tubes - Nitrogen Dioxide (NO2)

 5 Bevans Row, Port Tennant - facade diffusion tube
2005
Oct 2005 30.80 µg/m3
Nov 2005 36.70 µg/m3
Dec 2005 39.30 µg/m3
Average 2005 35.60 µg/m3
2006
Jan 2006 38.80 µg/m3
Feb 2006 36.00 µg/m3
Mar 2006 24.60 µg/m3
Apr 2006 26.60 µg/m3
May 2006 24.20 µg/m3
Jun 2006 22.80 µg/m3
Jul 2006 20.80 µg/m3
Aug 2006 18.10 µg/m3
Sep 2006 23.90 µg/m3
Oct 2006 33.80 µg/m3
Nov 2006 39.10 µg/m3
Dec 2006 32.70 µg/m3
Average 2006 28.45 µg/m3
2007
Jan 2007 32.40 µg/m3
Feb 2007 28.10 µg/m3
Mar 2007 28.40 µg/m3
Apr 2007 31.10 µg/m3
May 2007 21.70 µg/m3
Jun 2007 17.00 µg/m3
Jul 2007 15.00 µg/m3
Aug 2007 21.50 µg/m3
Sep 2007 25.10 µg/m3
Oct 2007 38.10 µg/m3
Nov 2007 40.40 µg/m3
Dec 2007 36.50 µg/m3
Average 2007 27.94 µg/m3
2008
Jan 2008 26.80 µg/m3
Feb 2008 40.50 µg/m3
Mar 2008 30.20 µg/m3
Apr 2008 28.50 µg/m3
May 2008 29.60 µg/m3
Jun 2008 17.00 µg/m3
Jul 2008 13.60 µg/m3
Aug 2008 21.40 µg/m3
Sep 2008 60.90 µg/m3
Oct 2008 33.90 µg/m3
Nov 2008 32.30 µg/m3
Dec 2008 38.40 µg/m3
Average 2008 31.09 µg/m3
2009
Jan 2009 38.30 µg/m3
Feb 2009 37.50 µg/m3
Mar 2009 29.90 µg/m3
Apr 2009 29.00 µg/m3
Average 2009 33.67 µg/m3
2012
Jan 2012 38.40 µg/m3
Apr 2012 23.20 µg/m3
May 2012 21.60 µg/m3
Jun 2012 19.90 µg/m3
Jul 2012 18.90 µg/m3
Aug 2012 19.30 µg/m3
Average 2012 23.55 µg/m3
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