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

Diffusion Tubes - Nitrogen Dioxide (NO2)

 505 Clydach Road, Ynysforgan - facade diffusion tube
2005
Oct 2005 22.90 µg/m3
Nov 2005 33.60 µg/m3
Dec 2005 35.30 µg/m3
Average 2005 30.60 µg/m3
2006
Jan 2006 36.10 µg/m3
Feb 2006 32.60 µg/m3
Mar 2006 27.70 µg/m3
Apr 2006 21.70 µg/m3
May 2006 23.00 µg/m3
Jun 2006 26.10 µg/m3
Jul 2006 22.80 µg/m3
Aug 2006 13.90 µg/m3
Sep 2006 27.40 µg/m3
Oct 2006 30.10 µg/m3
Nov 2006 39.00 µg/m3
Dec 2006 35.60 µg/m3
Average 2006 28.00 µg/m3
2007
Jan 2007 27.30 µg/m3
Feb 2007 35.00 µg/m3
Mar 2007 23.10 µg/m3
Apr 2007 31.20 µg/m3
May 2007 19.10 µg/m3
Jun 2007 24.00 µg/m3
Jul 2007 19.30 µg/m3
Aug 2007 16.90 µg/m3
Sep 2007 23.20 µg/m3
Oct 2007 39.30 µg/m3
Nov 2007 35.30 µg/m3
Dec 2007 39.10 µg/m3
Average 2007 27.73 µg/m3
2008
Jan 2008 36.60 µg/m3
Feb 2008 48.00 µg/m3
Mar 2008 27.70 µg/m3
Apr 2008 24.20 µg/m3
May 2008 35.20 µg/m3
Jun 2008 19.70 µg/m3
Jul 2008 20.30 µg/m3
Aug 2008 22.90 µg/m3
Sep 2008 27.50 µg/m3
Oct 2008 29.60 µg/m3
Nov 2008 21.90 µg/m3
Dec 2008 41.20 µg/m3
Average 2008 29.57 µg/m3
2009
Jan 2009 40.20 µg/m3
Feb 2009 43.10 µg/m3
Mar 2009 32.20 µg/m3
Apr 2009 37.30 µg/m3
Average 2009 38.20 µg/m3
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