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

Diffusion Tubes - Nitrogen Dioxide (NO2)

 5 Port Tennant Road, Port Tennant - facade diffusion tube
2005
Oct 2005 42.00 µg/m3
Nov 2005 50.90 µg/m3
Dec 2005 51.10 µg/m3
Average 2005 48.00 µg/m3
2006
Jan 2006 45.80 µg/m3
Feb 2006 43.60 µg/m3
Mar 2006 33.40 µg/m3
Apr 2006 34.30 µg/m3
May 2006 38.40 µg/m3
Jun 2006 34.50 µg/m3
Jul 2006 30.60 µg/m3
Aug 2006 25.10 µg/m3
Sep 2006 38.40 µg/m3
Oct 2006 48.90 µg/m3
Nov 2006 48.90 µg/m3
Dec 2006 43.00 µg/m3
Average 2006 38.74 µg/m3
2007
Jan 2007 38.30 µg/m3
Feb 2007 50.40 µg/m3
Mar 2007 37.00 µg/m3
Apr 2007 41.20 µg/m3
May 2007 34.20 µg/m3
Jun 2007 35.30 µg/m3
Jul 2007 30.20 µg/m3
Aug 2007 32.00 µg/m3
Sep 2007 37.10 µg/m3
Oct 2007 53.90 µg/m3
Nov 2007 60.90 µg/m3
Dec 2007 38.60 µg/m3
Average 2007 40.76 µg/m3
2008
Jan 2008 46.10 µg/m3
Feb 2008 57.20 µg/m3
Mar 2008 41.10 µg/m3
Apr 2008 38.00 µg/m3
May 2008 41.50 µg/m3
Jun 2008 31.00 µg/m3
Jul 2008 29.60 µg/m3
Aug 2008 31.50 µg/m3
Sep 2008 44.80 µg/m3
Oct 2008 45.00 µg/m3
Nov 2008 40.30 µg/m3
Dec 2008 44.40 µg/m3
Average 2008 40.87 µg/m3
2009
Jan 2009 56.20 µg/m3
Feb 2009 55.60 µg/m3
Mar 2009 48.70 µg/m3
Apr 2009 46.90 µg/m3
Average 2009 51.85 µg/m3
2012
Jan 2012 54.10 µg/m3
Apr 2012 36.60 µg/m3
May 2012 33.10 µg/m3
Jun 2012 29.90 µg/m3
Aug 2012 29.00 µg/m3
Average 2012 36.54 µg/m3
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