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Index Banded Annual Totals for Swansea:
LOW
102 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)

 Hafod Post Office - facade diffusion tube
2005
Oct 2005 64.40 µg/m3
Nov 2005 81.50 µg/m3
Dec 2005 89.20 µg/m3
Average 2005 78.37 µg/m3
2006
Jan 2006 79.00 µg/m3
Feb 2006 75.60 µg/m3
Mar 2006 58.00 µg/m3
Apr 2006 70.40 µg/m3
May 2006 62.80 µg/m3
Jun 2006 61.60 µg/m3
Jul 2006 50.60 µg/m3
Aug 2006 64.50 µg/m3
Average 2006 65.31 µg/m3
2007
Feb 2007 77.90 µg/m3
Mar 2007 69.70 µg/m3
Apr 2007 70.40 µg/m3
May 2007 61.00 µg/m3
Jun 2007 58.90 µg/m3
Jul 2007 50.50 µg/m3
Aug 2007 62.40 µg/m3
Sep 2007 67.10 µg/m3
Oct 2007 80.30 µg/m3
Nov 2007 96.80 µg/m3
Dec 2007 70.20 µg/m3
Average 2007 69.56 µg/m3
2008
Feb 2008 74.30 µg/m3
Mar 2008 66.70 µg/m3
Apr 2008 69.00 µg/m3
May 2008 66.70 µg/m3
Jun 2008 57.10 µg/m3
Jul 2008 54.30 µg/m3
Aug 2008 49.30 µg/m3
Sep 2008 58.30 µg/m3
Oct 2008 73.70 µg/m3
Nov 2008 83.20 µg/m3
Dec 2008 78.90 µg/m3
Average 2008 66.50 µg/m3
2009
Jan 2009 67.90 µg/m3
Feb 2009 83.60 µg/m3
Mar 2009 55.50 µg/m3
Apr 2009 59.60 µg/m3
Average 2009 66.65 µg/m3
2012
Jan 2012 73.50 µg/m3
Apr 2012 67.90 µg/m3
May 2012 54.20 µg/m3
Jun 2012 42.20 µg/m3
Jul 2012 49.40 µg/m3
Aug 2012 44.80 µg/m3
Average 2012 55.33 µg/m3
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