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

Diffusion Tubes - Nitrogen Dioxide (NO2)

 6 Pentreguinea Road, St.Thomas - facade diffusion tube
2005
Oct 2005 40.20 µg/m3
Nov 2005 44.90 µg/m3
Dec 2005 48.30 µg/m3
Average 2005 44.47 µg/m3
2006
Jan 2006 49.40 µg/m3
Feb 2006 43.20 µg/m3
Mar 2006 35.40 µg/m3
Apr 2006 28.10 µg/m3
May 2006 36.40 µg/m3
Jun 2006 40.50 µg/m3
Jul 2006 33.40 µg/m3
Aug 2006 26.60 µg/m3
Sep 2006 35.00 µg/m3
Oct 2006 41.70 µg/m3
Nov 2006 42.10 µg/m3
Dec 2006 38.40 µg/m3
Average 2006 37.52 µg/m3
2007
Jan 2007 32.80 µg/m3
Feb 2007 38.80 µg/m3
Mar 2007 37.30 µg/m3
Apr 2007 38.20 µg/m3
May 2007 28.40 µg/m3
Jun 2007 34.20 µg/m3
Jul 2007 37.10 µg/m3
Aug 2007 32.80 µg/m3
Sep 2007 37.00 µg/m3
Oct 2007 53.80 µg/m3
Nov 2007 52.40 µg/m3
Dec 2007 46.80 µg/m3
Average 2007 39.13 µg/m3
2008
Jan 2008 33.40 µg/m3
Feb 2008 51.30 µg/m3
Mar 2008 34.10 µg/m3
Apr 2008 35.90 µg/m3
May 2008 52.00 µg/m3
Jun 2008 29.80 µg/m3
Jul 2008 28.10 µg/m3
Aug 2008 28.10 µg/m3
Sep 2008 43.80 µg/m3
Oct 2008 42.10 µg/m3
Nov 2008 36.20 µg/m3
Dec 2008 48.30 µg/m3
Average 2008 38.59 µg/m3
2009
Jan 2009 46.80 µg/m3
Feb 2009 46.00 µg/m3
Mar 2009 36.40 µg/m3
Apr 2009 47.20 µg/m3
Average 2009 44.10 µg/m3
2012
Jan 2012 44.50 µg/m3
Apr 2012 28.60 µg/m3
May 2012 33.60 µg/m3
Jun 2012 34.30 µg/m3
Jul 2012 27.50 µg/m3
Aug 2012 28.50 µg/m3
Average 2012 32.83 µg/m3
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