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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)

 38 Peniel Green Road, Llansamlet - facade diffusion tube
2005
Oct 2005 35.80 µg/m3
Nov 2005 50.30 µg/m3
Dec 2005 50.00 µg/m3
Average 2005 45.37 µg/m3
2006
Jan 2006 51.50 µg/m3
Feb 2006 48.30 µg/m3
Mar 2006 34.50 µg/m3
Apr 2006 42.40 µg/m3
May 2006 39.80 µg/m3
Jun 2006 41.80 µg/m3
Jul 2006 45.10 µg/m3
Aug 2006 27.30 µg/m3
Sep 2006 40.50 µg/m3
Oct 2006 43.40 µg/m3
Nov 2006 50.20 µg/m3
Dec 2006 47.50 µg/m3
Average 2006 42.69 µg/m3
2007
Jan 2007 40.90 µg/m3
Feb 2007 50.00 µg/m3
Mar 2007 35.80 µg/m3
Apr 2007 44.60 µg/m3
May 2007 32.30 µg/m3
Jun 2007 38.60 µg/m3
Jul 2007 38.20 µg/m3
Aug 2007 33.70 µg/m3
Sep 2007 35.00 µg/m3
Oct 2007 51.20 µg/m3
Nov 2007 47.10 µg/m3
Dec 2007 51.50 µg/m3
Average 2007 41.57 µg/m3
2008
Jan 2008 51.30 µg/m3
Feb 2008 57.50 µg/m3
Mar 2008 43.40 µg/m3
Apr 2008 45.90 µg/m3
May 2008 45.80 µg/m3
Jun 2008 34.00 µg/m3
Jul 2008 29.60 µg/m3
Aug 2008 32.70 µg/m3
Sep 2008 38.40 µg/m3
Oct 2008 50.10 µg/m3
Nov 2008 46.80 µg/m3
Dec 2008 47.30 µg/m3
Average 2008 43.57 µg/m3
2009
Jan 2009 42.50 µg/m3
Feb 2009 48.10 µg/m3
Mar 2009 36.30 µg/m3
Apr 2009 51.90 µg/m3
Average 2009 44.70 µg/m3
2012
Jan 2012 43.00 µg/m3
Apr 2012 31.40 µg/m3
May 2012 30.70 µg/m3
Jun 2012 31.20 µg/m3
Jul 2012 29.90 µg/m3
Aug 2012 30.50 µg/m3
Average 2012 32.78 µg/m3
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