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Index Banded Annual Totals for Swansea:
LOW
98 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)

 19 Pentrepoeth Road, Morriston - facade diffusion tube
2005
Oct 2005 37.70 µg/m3
Nov 2005 39.50 µg/m3
Dec 2005 41.30 µg/m3
Average 2005 39.50 µg/m3
2006
Jan 2006 37.30 µg/m3
Feb 2006 41.80 µg/m3
Mar 2006 31.80 µg/m3
Apr 2006 30.90 µg/m3
May 2006 29.60 µg/m3
Jun 2006 27.90 µg/m3
Jul 2006 27.40 µg/m3
Aug 2006 23.40 µg/m3
Sep 2006 29.70 µg/m3
Oct 2006 35.50 µg/m3
Nov 2006 33.50 µg/m3
Dec 2006 38.70 µg/m3
Average 2006 32.29 µg/m3
2007
Jan 2007 31.80 µg/m3
Feb 2007 44.70 µg/m3
Mar 2007 31.60 µg/m3
Apr 2007 36.20 µg/m3
May 2007 26.20 µg/m3
Jun 2007 30.40 µg/m3
Jul 2007 25.50 µg/m3
Aug 2007 25.00 µg/m3
Sep 2007 30.80 µg/m3
Oct 2007 43.30 µg/m3
Nov 2007 41.90 µg/m3
Dec 2007 42.20 µg/m3
Average 2007 34.13 µg/m3
2008
Jan 2008 39.70 µg/m3
Feb 2008 48.10 µg/m3
Mar 2008 37.40 µg/m3
Apr 2008 35.10 µg/m3
May 2008 33.40 µg/m3
Jun 2008 28.50 µg/m3
Jul 2008 28.30 µg/m3
Aug 2008 26.00 µg/m3
Sep 2008 30.20 µg/m3
Oct 2008 37.20 µg/m3
Nov 2008 29.80 µg/m3
Dec 2008 44.60 µg/m3
Average 2008 34.86 µg/m3
2009
Jan 2009 39.50 µg/m3
Feb 2009 47.80 µg/m3
Mar 2009 43.50 µg/m3
Apr 2009 41.70 µg/m3
Average 2009 43.12 µg/m3
2012
Jan 2012 42.20 µg/m3
May 2012 26.20 µg/m3
Jun 2012 25.30 µg/m3
Jul 2012 23.90 µg/m3
Aug 2012 28.80 µg/m3
Average 2012 29.28 µg/m3
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