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Index Banded Annual Totals for Swansea:
LOW
99 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)

 17 Clase Road, Morriston - facade diffusion tube
2005
Oct 2005 37.40 µg/m3
Nov 2005 47.70 µg/m3
Dec 2005 52.50 µg/m3
Average 2005 45.87 µg/m3
2006
Jan 2006 50.60 µg/m3
Feb 2006 43.30 µg/m3
Mar 2006 38.60 µg/m3
Apr 2006 38.30 µg/m3
May 2006 39.80 µg/m3
Jun 2006 38.80 µg/m3
Jul 2006 35.10 µg/m3
Aug 2006 32.20 µg/m3
Sep 2006 35.70 µg/m3
Oct 2006 43.40 µg/m3
Nov 2006 48.80 µg/m3
Dec 2006 49.00 µg/m3
Average 2006 41.13 µg/m3
2007
Jan 2007 39.30 µg/m3
Feb 2007 54.80 µg/m3
Mar 2007 37.80 µg/m3
Apr 2007 42.80 µg/m3
May 2007 32.30 µg/m3
Jun 2007 38.80 µg/m3
Jul 2007 24.70 µg/m3
Aug 2007 30.80 µg/m3
Sep 2007 38.70 µg/m3
Oct 2007 47.50 µg/m3
Nov 2007 55.90 µg/m3
Average 2007 40.31 µg/m3
2008
Jan 2008 50.20 µg/m3
Feb 2008 60.80 µg/m3
Mar 2008 43.80 µg/m3
Apr 2008 34.80 µg/m3
May 2008 40.30 µg/m3
Jun 2008 31.50 µg/m3
Jul 2008 34.30 µg/m3
Aug 2008 25.20 µg/m3
Sep 2008 39.40 µg/m3
Oct 2008 50.30 µg/m3
Nov 2008 41.20 µg/m3
Dec 2008 57.70 µg/m3
Average 2008 42.46 µg/m3
2009
Jan 2009 50.20 µg/m3
Feb 2009 62.00 µg/m3
Mar 2009 54.80 µg/m3
Apr 2009 48.10 µg/m3
Average 2009 53.77 µg/m3
2012
Jan 2012 57.80 µg/m3
Apr 2012 36.60 µg/m3
May 2012 28.60 µg/m3
Jun 2012 38.00 µg/m3
Jul 2012 30.40 µg/m3
Aug 2012 34.90 µg/m3
Average 2012 37.72 µg/m3
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