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

Diffusion Tubes - Nitrogen Dioxide (NO2)

 56 Westway - facade diffusion tube
2005
Oct 2005 35.70 µg/m3
Nov 2005 43.10 µg/m3
Dec 2005 46.00 µg/m3
Average 2005 41.60 µg/m3
2006
Jan 2006 39.00 µg/m3
Feb 2006 42.50 µg/m3
Mar 2006 24.60 µg/m3
Apr 2006 24.30 µg/m3
May 2006 24.70 µg/m3
Jun 2006 24.20 µg/m3
Jul 2006 24.00 µg/m3
Aug 2006 19.30 µg/m3
Sep 2006 25.00 µg/m3
Oct 2006 33.30 µg/m3
Nov 2006 38.20 µg/m3
Dec 2006 35.10 µg/m3
Average 2006 29.52 µg/m3
2007
Jan 2007 27.40 µg/m3
Feb 2007 43.50 µg/m3
Mar 2007 30.50 µg/m3
Apr 2007 34.20 µg/m3
May 2007 23.30 µg/m3
Jun 2007 20.90 µg/m3
Jul 2007 15.20 µg/m3
Aug 2007 22.20 µg/m3
Sep 2007 28.00 µg/m3
Oct 2007 45.40 µg/m3
Nov 2007 47.60 µg/m3
Dec 2007 43.40 µg/m3
Average 2007 31.80 µg/m3
2008
Jan 2008 28.40 µg/m3
Feb 2008 45.90 µg/m3
Mar 2008 30.80 µg/m3
May 2008 39.10 µg/m3
Jun 2008 15.70 µg/m3
Jul 2008 20.40 µg/m3
Aug 2008 17.00 µg/m3
Sep 2008 38.40 µg/m3
Oct 2008 33.20 µg/m3
Nov 2008 42.30 µg/m3
Dec 2008 43.40 µg/m3
Average 2008 32.24 µg/m3
2009
Jan 2009 35.10 µg/m3
Feb 2009 42.30 µg/m3
Mar 2009 34.60 µg/m3
Apr 2009 33.10 µg/m3
Average 2009 36.27 µg/m3
2012
Jan 2012 42.70 µg/m3
Apr 2012 31.20 µg/m3
May 2012 28.70 µg/m3
Jun 2012 16.90 µg/m3
Jul 2012 16.50 µg/m3
Aug 2012 18.90 µg/m3
Average 2012 25.82 µg/m3
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