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

Diffusion Tubes - Nitrogen Dioxide (NO2)

 69 Pentreguinea Road, St.Thomas - facade diffusion tube
2005
Oct 2005 36.90 µg/m3
Nov 2005 52.90 µg/m3
Dec 2005 56.00 µg/m3
Average 2005 48.60 µg/m3
2006
Jan 2006 43.70 µg/m3
Feb 2006 45.90 µg/m3
Mar 2006 32.40 µg/m3
Apr 2006 36.20 µg/m3
May 2006 30.10 µg/m3
Jun 2006 34.70 µg/m3
Jul 2006 31.90 µg/m3
Aug 2006 30.10 µg/m3
Sep 2006 32.20 µg/m3
Oct 2006 38.20 µg/m3
Nov 2006 47.80 µg/m3
Dec 2006 43.50 µg/m3
Average 2006 37.23 µg/m3
2007
Jan 2007 36.40 µg/m3
Feb 2007 46.70 µg/m3
Mar 2007 34.30 µg/m3
Apr 2007 37.60 µg/m3
May 2007 29.70 µg/m3
Jun 2007 31.00 µg/m3
Jul 2007 29.50 µg/m3
Aug 2007 33.80 µg/m3
Sep 2007 36.70 µg/m3
Oct 2007 52.50 µg/m3
Nov 2007 52.80 µg/m3
Dec 2007 29.50 µg/m3
Average 2007 37.54 µg/m3
2008
Jan 2008 39.30 µg/m3
Feb 2008 49.20 µg/m3
Mar 2008 37.80 µg/m3
Apr 2008 36.50 µg/m3
May 2008 38.30 µg/m3
Jun 2008 27.10 µg/m3
Jul 2008 25.00 µg/m3
Aug 2008 26.90 µg/m3
Sep 2008 44.30 µg/m3
Oct 2008 41.60 µg/m3
Nov 2008 50.20 µg/m3
Dec 2008 43.00 µg/m3
Average 2008 38.27 µg/m3
2009
Jan 2009 35.10 µg/m3
Feb 2009 48.00 µg/m3
Mar 2009 38.00 µg/m3
Apr 2009 40.10 µg/m3
Average 2009 40.30 µg/m3
2012
Jan 2012 45.80 µg/m3
Apr 2012 29.10 µg/m3
May 2012 27.50 µg/m3
Jun 2012 28.40 µg/m3
Jul 2012 25.80 µg/m3
Aug 2012 28.00 µg/m3
Average 2012 30.77 µg/m3
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