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Index Banded Annual Totals for Swansea:
LOW
103 days
MODERATE
17 days
HIGH
1 day
VERY HIGH
5 days
annual air quality totals for all Swansea monitoring stations

Diffusion Tubes - Nitrogen Dioxide (NO2)

 30 Carmarthen Road, Dyfatty - facade diffusion tube
2005
Oct 2005 54.70 µg/m3
Nov 2005 58.60 µg/m3
Dec 2005 64.00 µg/m3
Average 2005 59.10 µg/m3
2006
Jan 2006 61.80 µg/m3
Feb 2006 56.30 µg/m3
Mar 2006 46.00 µg/m3
Apr 2006 40.40 µg/m3
May 2006 40.90 µg/m3
Jun 2006 38.70 µg/m3
Jul 2006 44.40 µg/m3
Aug 2006 35.20 µg/m3
Sep 2006 40.30 µg/m3
Oct 2006 49.90 µg/m3
Nov 2006 52.30 µg/m3
Dec 2006 55.80 µg/m3
Average 2006 46.83 µg/m3
2007
Jan 2007 37.50 µg/m3
Feb 2007 59.30 µg/m3
Mar 2007 45.90 µg/m3
Apr 2007 43.20 µg/m3
May 2007 37.50 µg/m3
Jun 2007 42.40 µg/m3
Jul 2007 24.30 µg/m3
Aug 2007 36.70 µg/m3
Sep 2007 41.40 µg/m3
Oct 2007 66.80 µg/m3
Nov 2007 64.20 µg/m3
Dec 2007 62.20 µg/m3
Average 2007 46.78 µg/m3
2008
Jan 2008 45.30 µg/m3
Feb 2008 67.30 µg/m3
Mar 2008 42.90 µg/m3
Apr 2008 45.40 µg/m3
May 2008 59.00 µg/m3
Jun 2008 37.90 µg/m3
Jul 2008 36.30 µg/m3
Aug 2008 33.30 µg/m3
Sep 2008 53.00 µg/m3
Oct 2008 55.60 µg/m3
Nov 2008 56.40 µg/m3
Dec 2008 58.00 µg/m3
Average 2008 49.20 µg/m3
2009
Jan 2009 57.60 µg/m3
Feb 2009 62.60 µg/m3
Mar 2009 62.90 µg/m3
Apr 2009 50.70 µg/m3
Average 2009 58.45 µg/m3
2012
Jan 2012 52.70 µg/m3
Apr 2012 36.50 µg/m3
May 2012 35.40 µg/m3
Jun 2012 31.80 µg/m3
Jul 2012 31.10 µg/m3
Aug 2012 32.90 µg/m3
Average 2012 36.73 µg/m3
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