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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)

 49 Dyfatty Street, Dyfatty - facade diffusion tube
2005
Oct 2005 55.70 µg/m3
Nov 2005 67.60 µg/m3
Dec 2005 67.90 µg/m3
Average 2005 63.73 µg/m3
2006
Jan 2006 60.90 µg/m3
Feb 2006 46.80 µg/m3
Mar 2006 50.00 µg/m3
Apr 2006 55.40 µg/m3
May 2006 50.90 µg/m3
Jun 2006 59.10 µg/m3
Jul 2006 32.00 µg/m3
Aug 2006 49.30 µg/m3
Sep 2006 43.10 µg/m3
Oct 2006 56.20 µg/m3
Nov 2006 60.90 µg/m3
Dec 2006 54.20 µg/m3
Average 2006 51.57 µg/m3
2007
Jan 2007 49.90 µg/m3
Feb 2007 63.80 µg/m3
Mar 2007 56.70 µg/m3
Apr 2007 56.00 µg/m3
May 2007 50.90 µg/m3
Jun 2007 47.00 µg/m3
Jul 2007 41.30 µg/m3
Aug 2007 54.90 µg/m3
Sep 2007 55.70 µg/m3
Oct 2007 64.40 µg/m3
Nov 2007 65.10 µg/m3
Dec 2007 59.10 µg/m3
Average 2007 55.40 µg/m3
2008
Jan 2008 54.10 µg/m3
Feb 2008 62.40 µg/m3
Mar 2008 56.60 µg/m3
Apr 2008 40.70 µg/m3
May 2008 58.90 µg/m3
Jun 2008 46.20 µg/m3
Jul 2008 47.90 µg/m3
Aug 2008 43.10 µg/m3
Sep 2008 57.60 µg/m3
Oct 2008 58.90 µg/m3
Nov 2008 37.50 µg/m3
Dec 2008 66.60 µg/m3
Average 2008 52.54 µg/m3
2009
Jan 2009 59.40 µg/m3
Feb 2009 77.90 µg/m3
Mar 2009 60.60 µg/m3
Apr 2009 52.00 µg/m3
Average 2009 62.48 µg/m3
2012
Jan 2012 58.80 µg/m3
Apr 2012 52.20 µg/m3
May 2012 38.60 µg/m3
Jul 2012 41.40 µg/m3
Aug 2012 30.20 µg/m3
Average 2012 44.24 µg/m3
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