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

Diffusion Tubes - Nitrogen Dioxide (NO2)

 15 Mysydd Road, Landore - facade diffusion tube
2005
Oct 2005 39.40 µg/m3
Nov 2005 48.60 µg/m3
Dec 2005 48.80 µg/m3
Average 2005 45.60 µg/m3
2006
Jan 2006 47.90 µg/m3
Feb 2006 43.60 µg/m3
Mar 2006 33.00 µg/m3
Apr 2006 29.10 µg/m3
May 2006 29.40 µg/m3
Jun 2006 29.20 µg/m3
Jul 2006 30.40 µg/m3
Aug 2006 22.90 µg/m3
Sep 2006 34.70 µg/m3
Oct 2006 48.20 µg/m3
Nov 2006 50.20 µg/m3
Dec 2006 51.20 µg/m3
Average 2006 37.48 µg/m3
2007
Jan 2007 42.90 µg/m3
Feb 2007 54.50 µg/m3
Mar 2007 40.30 µg/m3
Apr 2007 42.10 µg/m3
May 2007 32.20 µg/m3
Jun 2007 30.40 µg/m3
Jul 2007 26.20 µg/m3
Aug 2007 28.70 µg/m3
Sep 2007 33.70 µg/m3
Oct 2007 53.50 µg/m3
Nov 2007 55.90 µg/m3
Dec 2007 55.60 µg/m3
Average 2007 41.33 µg/m3
2008
Jan 2008 48.30 µg/m3
Feb 2008 60.70 µg/m3
Mar 2008 37.70 µg/m3
Apr 2008 41.80 µg/m3
May 2008 43.90 µg/m3
Jun 2008 29.30 µg/m3
Jul 2008 31.10 µg/m3
Aug 2008 28.60 µg/m3
Sep 2008 34.00 µg/m3
Oct 2008 46.00 µg/m3
Nov 2008 46.10 µg/m3
Dec 2008 57.00 µg/m3
Average 2008 42.04 µg/m3
2009
Jan 2009 47.40 µg/m3
Feb 2009 59.30 µg/m3
Mar 2009 49.80 µg/m3
Apr 2009 35.80 µg/m3
Average 2009 48.07 µg/m3
2012
Jan 2012 49.30 µg/m3
Apr 2012 32.40 µg/m3
May 2012 33.40 µg/m3
Jun 2012 27.90 µg/m3
Jul 2012 19.40 µg/m3
Aug 2012 28.20 µg/m3
Average 2012 31.77 µg/m3
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