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

Diffusion Tubes - Nitrogen Dioxide (NO2)

 12 Ystrad Road, Fforestfach - facade diffusion tube
2005
Oct 2005 33.40 µg/m3
Nov 2005 25.90 µg/m3
Dec 2005 39.50 µg/m3
Average 2005 32.93 µg/m3
2006
Jan 2006 43.20 µg/m3
Feb 2006 38.30 µg/m3
Mar 2006 28.80 µg/m3
Apr 2006 23.60 µg/m3
May 2006 25.20 µg/m3
Jun 2006 27.70 µg/m3
Jul 2006 23.00 µg/m3
Aug 2006 18.10 µg/m3
Sep 2006 25.50 µg/m3
Oct 2006 34.30 µg/m3
Nov 2006 34.60 µg/m3
Dec 2006 32.30 µg/m3
Average 2006 29.55 µg/m3
2007
Jan 2007 27.70 µg/m3
Feb 2007 38.50 µg/m3
Mar 2007 30.20 µg/m3
Apr 2007 32.20 µg/m3
May 2007 21.40 µg/m3
Jun 2007 25.70 µg/m3
Jul 2007 19.20 µg/m3
Aug 2007 19.70 µg/m3
Sep 2007 27.40 µg/m3
Oct 2007 41.00 µg/m3
Nov 2007 43.90 µg/m3
Dec 2007 40.90 µg/m3
Average 2007 30.65 µg/m3
2008
Jan 2008 31.30 µg/m3
Feb 2008 39.20 µg/m3
Mar 2008 17.20 µg/m3
Apr 2008 31.50 µg/m3
May 2008 33.10 µg/m3
Jun 2008 22.60 µg/m3
Jul 2008 23.40 µg/m3
Aug 2008 20.10 µg/m3
Sep 2008 31.60 µg/m3
Oct 2008 34.90 µg/m3
Nov 2008 39.60 µg/m3
Dec 2008 33.90 µg/m3
Average 2008 29.87 µg/m3
2009
Jan 2009 38.20 µg/m3
Feb 2009 38.80 µg/m3
Mar 2009 38.80 µg/m3
Apr 2009 35.10 µg/m3
Average 2009 37.72 µg/m3
2012
Jan 2012 39.60 µg/m3
Apr 2012 25.40 µg/m3
May 2012 19.60 µg/m3
Jun 2012 20.30 µg/m3
Jul 2012 17.00 µg/m3
Aug 2012 17.80 µg/m3
Average 2012 23.28 µg/m3
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