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Index Banded Annual Totals for Swansea:
LOW
93 days
MODERATE
18 days
HIGH
1 day
VERY HIGH
4 days
annual air quality totals for all Swansea monitoring stations

Diffusion Tubes - Nitrogen Dioxide (NO2)

 21 Vivian road, Sketty - facade diffusion tube
2005
Oct 2005 34.20 µg/m3
Nov 2005 39.30 µg/m3
Dec 2005 46.70 µg/m3
Average 2005 40.07 µg/m3
2006
Jan 2006 45.90 µg/m3
Feb 2006 43.50 µg/m3
Mar 2006 32.60 µg/m3
Apr 2006 37.40 µg/m3
May 2006 34.50 µg/m3
Jun 2006 35.20 µg/m3
Jul 2006 28.60 µg/m3
Aug 2006 29.80 µg/m3
Sep 2006 29.90 µg/m3
Oct 2006 40.10 µg/m3
Nov 2006 43.80 µg/m3
Dec 2006 39.10 µg/m3
Average 2006 36.70 µg/m3
2007
Jan 2007 36.50 µg/m3
Feb 2007 43.90 µg/m3
Mar 2007 35.80 µg/m3
Apr 2007 36.20 µg/m3
May 2007 32.40 µg/m3
Jun 2007 32.60 µg/m3
Jul 2007 20.80 µg/m3
Aug 2007 33.50 µg/m3
Sep 2007 36.10 µg/m3
Oct 2007 44.40 µg/m3
Nov 2007 48.10 µg/m3
Dec 2007 41.30 µg/m3
Average 2007 36.80 µg/m3
2008
Jan 2008 38.30 µg/m3
Feb 2008 47.50 µg/m3
Mar 2008 37.80 µg/m3
Apr 2008 37.40 µg/m3
May 2008 32.80 µg/m3
Jun 2008 28.80 µg/m3
Jul 2008 29.50 µg/m3
Aug 2008 23.70 µg/m3
Sep 2008 40.60 µg/m3
Oct 2008 41.40 µg/m3
Nov 2008 42.00 µg/m3
Dec 2008 42.10 µg/m3
Average 2008 36.82 µg/m3
2009
Jan 2009 40.60 µg/m3
Feb 2009 42.70 µg/m3
Mar 2009 41.70 µg/m3
Apr 2009 35.20 µg/m3
Average 2009 40.05 µg/m3
2012
Jan 2012 46.70 µg/m3
Apr 2012 33.20 µg/m3
May 2012 27.80 µg/m3
Jun 2012 24.50 µg/m3
Jul 2012 26.50 µg/m3
Aug 2012 24.50 µg/m3
Average 2012 30.53 µg/m3
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