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Index Banded Annual Totals for Swansea:
LOW
99 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)

 53 Mysydd Road, Landore - facade diffusion tube
2005
Oct 2005 38.50 µg/m3
Nov 2005 43.30 µg/m3
Dec 2005 44.80 µg/m3
Average 2005 42.20 µg/m3
2006
Jan 2006 47.10 µg/m3
Feb 2006 40.40 µg/m3
Mar 2006 34.30 µg/m3
Apr 2006 30.50 µg/m3
May 2006 28.00 µg/m3
Jun 2006 29.00 µg/m3
Jul 2006 32.40 µg/m3
Aug 2006 20.40 µg/m3
Sep 2006 34.20 µg/m3
Oct 2006 39.10 µg/m3
Nov 2006 39.00 µg/m3
Dec 2006 33.70 µg/m3
Average 2006 34.01 µg/m3
2007
Jan 2007 31.50 µg/m3
Feb 2007 43.50 µg/m3
Mar 2007 33.00 µg/m3
Apr 2007 39.90 µg/m3
May 2007 26.60 µg/m3
Jun 2007 32.20 µg/m3
Jul 2007 17.60 µg/m3
Aug 2007 22.60 µg/m3
Sep 2007 28.40 µg/m3
Oct 2007 44.40 µg/m3
Nov 2007 32.30 µg/m3
Dec 2007 46.30 µg/m3
Average 2007 33.19 µg/m3
2008
Jan 2008 39.80 µg/m3
Feb 2008 53.40 µg/m3
Mar 2008 32.80 µg/m3
Apr 2008 37.30 µg/m3
May 2008 38.20 µg/m3
Jun 2008 26.10 µg/m3
Jul 2008 21.90 µg/m3
Aug 2008 24.80 µg/m3
Sep 2008 27.70 µg/m3
Oct 2008 31.40 µg/m3
Nov 2008 25.50 µg/m3
Dec 2008 50.90 µg/m3
Average 2008 34.15 µg/m3
2009
Jan 2009 44.40 µg/m3
Feb 2009 48.10 µg/m3
Mar 2009 43.00 µg/m3
Apr 2009 41.80 µg/m3
Average 2009 44.32 µg/m3
2012
Jan 2012 43.50 µg/m3
Apr 2012 25.30 µg/m3
May 2012 25.60 µg/m3
Jun 2012 25.00 µg/m3
Jul 2012 20.10 µg/m3
Aug 2012 28.30 µg/m3
Average 2012 27.97 µg/m3
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