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Index Banded Annual Totals for Swansea:
LOW
104 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)

 1-7 Arethusa Quay, Marina - facade diffusion tube
2005
Oct 2005 26.00 µg/m3
Nov 2005 32.20 µg/m3
Dec 2005 37.60 µg/m3
Average 2005 31.93 µg/m3
2006
Jan 2006 35.90 µg/m3
Feb 2006 35.00 µg/m3
Mar 2006 24.00 µg/m3
Apr 2006 15.60 µg/m3
May 2006 19.30 µg/m3
Jun 2006 22.20 µg/m3
Jul 2006 21.20 µg/m3
Aug 2006 18.10 µg/m3
Sep 2006 22.10 µg/m3
Oct 2006 28.50 µg/m3
Nov 2006 36.40 µg/m3
Dec 2006 30.50 µg/m3
Average 2006 25.73 µg/m3
2007
Jan 2007 25.90 µg/m3
Feb 2007 34.40 µg/m3
Mar 2007 28.20 µg/m3
Apr 2007 36.70 µg/m3
May 2007 21.90 µg/m3
Jun 2007 26.10 µg/m3
Jul 2007 19.50 µg/m3
Aug 2007 22.10 µg/m3
Sep 2007 27.20 µg/m3
Oct 2007 40.50 µg/m3
Nov 2007 39.40 µg/m3
Dec 2007 37.10 µg/m3
Average 2007 29.92 µg/m3
2008
Jan 2008 30.40 µg/m3
Feb 2008 48.80 µg/m3
Mar 2008 28.90 µg/m3
May 2008 19.60 µg/m3
Jun 2008 17.60 µg/m3
Jul 2008 22.90 µg/m3
Aug 2008 19.70 µg/m3
Sep 2008 29.00 µg/m3
Oct 2008 22.30 µg/m3
Nov 2008 35.00 µg/m3
Dec 2008 35.40 µg/m3
Average 2008 28.15 µg/m3
2009
Jan 2009 34.10 µg/m3
Feb 2009 35.30 µg/m3
Mar 2009 31.00 µg/m3
Apr 2009 27.40 µg/m3
Average 2009 31.95 µg/m3
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