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

Diffusion Tubes - Nitrogen Dioxide (NO2)

 52 Glyncollen Drive, Ynysforgan - facade diffusion tube
2005
Oct 2005 45.40 µg/m3
Nov 2005 49.50 µg/m3
Dec 2005 51.50 µg/m3
Average 2005 48.80 µg/m3
2006
Jan 2006 48.80 µg/m3
Feb 2006 49.20 µg/m3
Mar 2006 37.30 µg/m3
Apr 2006 32.50 µg/m3
May 2006 29.40 µg/m3
Jun 2006 37.40 µg/m3
Jul 2006 34.40 µg/m3
Aug 2006 36.60 µg/m3
Sep 2006 35.90 µg/m3
Oct 2006 46.30 µg/m3
Nov 2006 46.80 µg/m3
Dec 2006 42.60 µg/m3
Average 2006 39.77 µg/m3
2007
Jan 2007 40.20 µg/m3
Feb 2007 50.50 µg/m3
Mar 2007 47.00 µg/m3
Apr 2007 44.40 µg/m3
May 2007 28.80 µg/m3
Jun 2007 36.60 µg/m3
Jul 2007 29.30 µg/m3
Aug 2007 37.00 µg/m3
Sep 2007 45.40 µg/m3
Oct 2007 58.60 µg/m3
Nov 2007 73.30 µg/m3
Dec 2007 52.50 µg/m3
Average 2007 45.30 µg/m3
2008
Jan 2008 42.60 µg/m3
Feb 2008 54.70 µg/m3
Mar 2008 44.30 µg/m3
Apr 2008 41.40 µg/m3
May 2008 57.10 µg/m3
Jun 2008 24.80 µg/m3
Jul 2008 31.00 µg/m3
Aug 2008 26.70 µg/m3
Sep 2008 46.70 µg/m3
Oct 2008 45.70 µg/m3
Nov 2008 57.10 µg/m3
Dec 2008 54.20 µg/m3
Average 2008 43.86 µg/m3
2009
Jan 2009 49.10 µg/m3
Feb 2009 66.10 µg/m3
Mar 2009 44.70 µg/m3
Apr 2009 51.60 µg/m3
Average 2009 52.87 µg/m3
2012
Jan 2012 51.50 µg/m3
Apr 2012 46.00 µg/m3
May 2012 33.40 µg/m3
Jun 2012 24.20 µg/m3
Jul 2012 24.70 µg/m3
Aug 2012 27.10 µg/m3
Average 2012 34.48 µg/m3
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