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

Diffusion Tubes - Nitrogen Dioxide (NO2)

 114 Pentreharne Road - facade diffusion tube
2005
Oct 2005 40.50 µg/m3
Nov 2005 54.40 µg/m3
Dec 2005 56.00 µg/m3
Average 2005 50.30 µg/m3
2006
Jan 2006 54.00 µg/m3
Feb 2006 45.20 µg/m3
Mar 2006 39.20 µg/m3
Apr 2006 40.80 µg/m3
May 2006 40.70 µg/m3
Jun 2006 37.60 µg/m3
Jul 2006 33.10 µg/m3
Aug 2006 26.50 µg/m3
Sep 2006 37.20 µg/m3
Oct 2006 45.00 µg/m3
Nov 2006 54.50 µg/m3
Dec 2006 51.50 µg/m3
Average 2006 42.11 µg/m3
2007
Jan 2007 43.30 µg/m3
Feb 2007 56.20 µg/m3
Mar 2007 39.60 µg/m3
Apr 2007 42.10 µg/m3
May 2007 34.70 µg/m3
Jun 2007 35.40 µg/m3
Jul 2007 28.10 µg/m3
Aug 2007 30.30 µg/m3
Sep 2007 35.90 µg/m3
Oct 2007 52.60 µg/m3
Dec 2007 53.90 µg/m3
Average 2007 41.10 µg/m3
2008
Jan 2008 49.60 µg/m3
Feb 2008 62.50 µg/m3
Mar 2008 42.20 µg/m3
Apr 2008 42.20 µg/m3
May 2008 39.20 µg/m3
Jun 2008 34.10 µg/m3
Jul 2008 33.40 µg/m3
Aug 2008 28.90 µg/m3
Sep 2008 42.70 µg/m3
Oct 2008 47.10 µg/m3
Nov 2008 50.00 µg/m3
Dec 2008 57.50 µg/m3
Average 2008 44.12 µg/m3
2009
Jan 2009 52.50 µg/m3
Feb 2009 58.60 µg/m3
Mar 2009 56.50 µg/m3
Apr 2009 48.10 µg/m3
Average 2009 53.92 µg/m3
2012
Jan 2012 39.10 µg/m3
Apr 2012 26.00 µg/m3
May 2012 29.60 µg/m3
Jun 2012 29.90 µg/m3
Jul 2012 26.20 µg/m3
Aug 2012 23.20 µg/m3
Average 2012 29.00 µg/m3
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