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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)

 126-149 Trawler Road, Marina - facade diffusion tube
2005
Oct 2005 23.50 µg/m3
Nov 2005 37.00 µg/m3
Dec 2005 36.10 µg/m3
Average 2005 32.20 µg/m3
2006
Jan 2006 34.60 µg/m3
Feb 2006 32.70 µg/m3
Mar 2006 20.60 µg/m3
Apr 2006 22.50 µg/m3
May 2006 18.80 µg/m3
Jun 2006 21.60 µg/m3
Jul 2006 23.00 µg/m3
Aug 2006 17.10 µg/m3
Sep 2006 22.90 µg/m3
Oct 2006 29.00 µg/m3
Nov 2006 36.20 µg/m3
Dec 2006 19.80 µg/m3
Average 2006 24.90 µg/m3
2007
Jan 2007 25.30 µg/m3
Feb 2007 36.70 µg/m3
Mar 2007 26.50 µg/m3
Apr 2007 34.50 µg/m3
May 2007 19.60 µg/m3
Jun 2007 17.80 µg/m3
Jul 2007 16.90 µg/m3
Aug 2007 21.90 µg/m3
Sep 2007 24.90 µg/m3
Oct 2007 29.30 µg/m3
Nov 2007 39.00 µg/m3
Dec 2007 33.60 µg/m3
Average 2007 27.17 µg/m3
2008
Jan 2008 23.80 µg/m3
Feb 2008 39.70 µg/m3
Mar 2008 25.50 µg/m3
Apr 2008 22.30 µg/m3
May 2008 26.00 µg/m3
Jun 2008 17.80 µg/m3
Jul 2008 18.50 µg/m3
Aug 2008 14.90 µg/m3
Sep 2008 27.20 µg/m3
Oct 2008 27.50 µg/m3
Nov 2008 31.00 µg/m3
Dec 2008 30.60 µg/m3
Average 2008 25.40 µg/m3
2009
Jan 2009 29.20 µg/m3
Feb 2009 33.00 µg/m3
Mar 2009 29.80 µg/m3
Apr 2009 27.90 µg/m3
Average 2009 29.97 µg/m3
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