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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)

 Ynysallan Road, Birchgrove - Lamppost diffusion tube
2005
Oct 2005 45.00 µg/m3
Nov 2005 50.30 µg/m3
Dec 2005 49.20 µg/m3
Average 2005 48.17 µg/m3
2006
Jan 2006 51.90 µg/m3
Feb 2006 48.30 µg/m3
Mar 2006 36.10 µg/m3
Apr 2006 44.70 µg/m3
May 2006 45.60 µg/m3
Jun 2006 31.50 µg/m3
Jul 2006 43.40 µg/m3
Aug 2006 38.50 µg/m3
Sep 2006 44.40 µg/m3
Oct 2006 46.50 µg/m3
Nov 2006 61.00 µg/m3
Dec 2006 51.20 µg/m3
Average 2006 45.26 µg/m3
2007
Jan 2007 46.80 µg/m3
Feb 2007 60.20 µg/m3
Mar 2007 40.30 µg/m3
Apr 2007 41.50 µg/m3
May 2007 36.20 µg/m3
Jun 2007 39.60 µg/m3
Jul 2007 32.70 µg/m3
Aug 2007 40.20 µg/m3
Sep 2007 35.50 µg/m3
Oct 2007 51.60 µg/m3
Nov 2007 57.40 µg/m3
Dec 2007 57.20 µg/m3
Average 2007 44.93 µg/m3
2008
Jan 2008 63.40 µg/m3
Apr 2008 44.30 µg/m3
May 2008 32.40 µg/m3
Jun 2008 35.40 µg/m3
Jul 2008 38.60 µg/m3
Aug 2008 44.30 µg/m3
Sep 2008 40.80 µg/m3
Oct 2008 55.90 µg/m3
Dec 2008 54.20 µg/m3
Average 2008 45.48 µg/m3
2009
Jan 2009 44.70 µg/m3
Feb 2009 66.10 µg/m3
Mar 2009 45.40 µg/m3
Apr 2009 44.70 µg/m3
Average 2009 50.23 µg/m3
2012
Jan 2012 55.80 µg/m3
Apr 2012 32.60 µg/m3
May 2012 24.70 µg/m3
Jun 2012 33.80 µg/m3
Jul 2012 31.00 µg/m3
Aug 2012 39.50 µg/m3
Average 2012 36.23 µg/m3
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