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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)

 6 Nantyffin Road, Llansamlet - facade diffusion tube
2005
Nov 2005 56.80 µg/m3
Dec 2005 53.30 µg/m3
Average 2005 55.05 µg/m3
2006
Jan 2006 54.80 µg/m3
Feb 2006 38.30 µg/m3
Mar 2006 37.40 µg/m3
Apr 2006 43.20 µg/m3
May 2006 40.70 µg/m3
Jun 2006 46.80 µg/m3
Jul 2006 38.80 µg/m3
Aug 2006 36.90 µg/m3
Sep 2006 46.20 µg/m3
Oct 2006 49.90 µg/m3
Nov 2006 59.60 µg/m3
Dec 2006 51.40 µg/m3
Average 2006 45.33 µg/m3
2007
Jan 2007 37.40 µg/m3
Feb 2007 56.00 µg/m3
Mar 2007 40.10 µg/m3
Apr 2007 42.60 µg/m3
May 2007 32.90 µg/m3
Jun 2007 37.50 µg/m3
Jul 2007 29.80 µg/m3
Oct 2007 60.20 µg/m3
Nov 2007 62.10 µg/m3
Dec 2007 57.40 µg/m3
Average 2007 45.60 µg/m3
2008
Feb 2008 65.20 µg/m3
Mar 2008 32.30 µg/m3
Apr 2008 41.40 µg/m3
May 2008 44.90 µg/m3
Jun 2008 31.60 µg/m3
Jul 2008 34.60 µg/m3
Aug 2008 24.70 µg/m3
Sep 2008 44.20 µg/m3
Oct 2008 50.20 µg/m3
Nov 2008 49.30 µg/m3
Dec 2008 61.50 µg/m3
Average 2008 43.63 µg/m3
2009
Jan 2009 53.80 µg/m3
Feb 2009 69.10 µg/m3
Mar 2009 51.00 µg/m3
Apr 2009 46.40 µg/m3
Average 2009 55.07 µg/m3
2012
Jan 2012 46.30 µg/m3
Apr 2012 33.60 µg/m3
May 2012 34.30 µg/m3
Jun 2012 29.70 µg/m3
Jul 2012 27.70 µg/m3
Aug 2012 30.20 µg/m3
Average 2012 33.63 µg/m3
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