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Index Banded Annual Totals for Swansea:
LOW
100 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)

 136 Osytersmouth Road - facade diffusion tube
2005
Oct 2005 31.30 µg/m3
Nov 2005 46.70 µg/m3
Dec 2005 47.80 µg/m3
Average 2005 41.93 µg/m3
2006
Jan 2006 44.90 µg/m3
Feb 2006 36.30 µg/m3
Mar 2006 31.10 µg/m3
Apr 2006 30.10 µg/m3
May 2006 33.70 µg/m3
Jun 2006 39.60 µg/m3
Jul 2006 27.00 µg/m3
Aug 2006 29.40 µg/m3
Sep 2006 30.10 µg/m3
Oct 2006 42.30 µg/m3
Nov 2006 44.60 µg/m3
Dec 2006 35.60 µg/m3
Average 2006 35.39 µg/m3
2007
Jan 2007 30.80 µg/m3
Feb 2007 49.00 µg/m3
Mar 2007 35.50 µg/m3
Apr 2007 43.10 µg/m3
May 2007 28.80 µg/m3
Jun 2007 34.80 µg/m3
Jul 2007 30.20 µg/m3
Aug 2007 35.20 µg/m3
Sep 2007 36.20 µg/m3
Oct 2007 48.90 µg/m3
Nov 2007 54.70 µg/m3
Dec 2007 48.00 µg/m3
Average 2007 39.60 µg/m3
2008
Jan 2008 36.30 µg/m3
Feb 2008 51.10 µg/m3
Mar 2008 39.00 µg/m3
Apr 2008 37.10 µg/m3
May 2008 42.80 µg/m3
Jun 2008 27.10 µg/m3
Jul 2008 30.00 µg/m3
Aug 2008 27.60 µg/m3
Sep 2008 39.90 µg/m3
Oct 2008 33.00 µg/m3
Nov 2008 48.50 µg/m3
Dec 2008 42.30 µg/m3
Average 2008 37.89 µg/m3
2009
Jan 2009 40.40 µg/m3
Feb 2009 49.40 µg/m3
Mar 2009 39.60 µg/m3
Apr 2009 34.90 µg/m3
Average 2009 41.08 µg/m3
2012
Jan 2012 46.70 µg/m3
Apr 2012 36.70 µg/m3
May 2012 34.90 µg/m3
Jun 2012 26.70 µg/m3
Jul 2012 28.30 µg/m3
Aug 2012 24.60 µg/m3
Average 2012 32.98 µg/m3
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