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Index Banded Annual Totals for Swansea:
LOW
100 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)

 34 Nantyffin Road, Llansamlet - facade diffusion tube
2005
Oct 2005 33.90 µg/m3
Nov 2005 38.70 µg/m3
Dec 2005 39.10 µg/m3
Average 2005 37.23 µg/m3
2006
Jan 2006 39.80 µg/m3
Feb 2006 33.50 µg/m3
Mar 2006 28.50 µg/m3
Apr 2006 30.50 µg/m3
May 2006 31.30 µg/m3
Jun 2006 32.70 µg/m3
Jul 2006 30.00 µg/m3
Aug 2006 24.60 µg/m3
Sep 2006 32.00 µg/m3
Nov 2006 41.30 µg/m3
Dec 2006 38.90 µg/m3
Average 2006 33.01 µg/m3
2007
Jan 2007 40.50 µg/m3
Feb 2007 42.60 µg/m3
Mar 2007 31.10 µg/m3
Apr 2007 32.40 µg/m3
May 2007 26.60 µg/m3
Jun 2007 30.90 µg/m3
Jul 2007 24.20 µg/m3
Aug 2007 25.60 µg/m3
Sep 2007 29.40 µg/m3
Oct 2007 43.80 µg/m3
Nov 2007 45.50 µg/m3
Dec 2007 39.50 µg/m3
Average 2007 34.34 µg/m3
2008
Jan 2008 38.60 µg/m3
Feb 2008 47.30 µg/m3
Mar 2008 43.20 µg/m3
Apr 2008 29.50 µg/m3
May 2008 36.90 µg/m3
Jun 2008 24.70 µg/m3
Jul 2008 26.90 µg/m3
Aug 2008 26.40 µg/m3
Sep 2008 34.50 µg/m3
Oct 2008 39.20 µg/m3
Nov 2008 42.80 µg/m3
Dec 2008 48.00 µg/m3
Average 2008 36.50 µg/m3
2009
Jan 2009 45.50 µg/m3
Feb 2009 56.00 µg/m3
Mar 2009 40.60 µg/m3
Apr 2009 33.50 µg/m3
Average 2009 43.90 µg/m3
2012
Jan 2012 38.40 µg/m3
Apr 2012 26.50 µg/m3
May 2012 23.60 µg/m3
Jun 2012 20.20 µg/m3
Jul 2012 21.70 µg/m3
Aug 2012 23.80 µg/m3
Average 2012 25.70 µg/m3
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