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Index Banded Annual Totals for Swansea:
LOW
101 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)

 16 Church Road, Llansamlet - facade diffusion tube
2005
Oct 2005 29.10 µg/m3
Nov 2005 35.30 µg/m3
Dec 2005 37.90 µg/m3
Average 2005 34.10 µg/m3
2006
Jan 2006 38.30 µg/m3
Feb 2006 28.80 µg/m3
Mar 2006 22.50 µg/m3
Apr 2006 23.50 µg/m3
May 2006 25.10 µg/m3
Jun 2006 26.00 µg/m3
Jul 2006 24.90 µg/m3
Aug 2006 16.20 µg/m3
Sep 2006 29.60 µg/m3
Oct 2006 29.80 µg/m3
Nov 2006 35.90 µg/m3
Dec 2006 26.80 µg/m3
Average 2006 27.28 µg/m3
2007
Jan 2007 25.10 µg/m3
Feb 2007 39.00 µg/m3
Mar 2007 24.20 µg/m3
Apr 2007 27.60 µg/m3
May 2007 18.90 µg/m3
Jun 2007 24.00 µg/m3
Jul 2007 15.10 µg/m3
Aug 2007 18.60 µg/m3
Sep 2007 23.00 µg/m3
Oct 2007 37.60 µg/m3
Nov 2007 32.70 µg/m3
Dec 2007 36.90 µg/m3
Average 2007 26.89 µg/m3
2008
Jan 2008 34.90 µg/m3
Feb 2008 43.30 µg/m3
Mar 2008 27.40 µg/m3
Apr 2008 28.90 µg/m3
May 2008 28.50 µg/m3
Jun 2008 19.00 µg/m3
Jul 2008 20.00 µg/m3
Aug 2008 19.20 µg/m3
Sep 2008 25.00 µg/m3
Oct 2008 30.60 µg/m3
Nov 2008 34.70 µg/m3
Average 2008 28.32 µg/m3
2009
Jan 2009 40.60 µg/m3
Feb 2009 30.20 µg/m3
Mar 2009 30.40 µg/m3
Apr 2009 36.30 µg/m3
Average 2009 34.37 µg/m3
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