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

Diffusion Tubes - Nitrogen Dioxide (NO2)

 32 Sway Road, Morriston - facade diffusion tube
2005
Oct 2005 30.00 µg/m3
Nov 2005 44.40 µg/m3
Dec 2005 41.80 µg/m3
Average 2005 38.73 µg/m3
2006
Jan 2006 43.30 µg/m3
Feb 2006 38.60 µg/m3
Mar 2006 27.60 µg/m3
Apr 2006 27.80 µg/m3
May 2006 28.90 µg/m3
Jun 2006 28.00 µg/m3
Jul 2006 25.70 µg/m3
Aug 2006 17.00 µg/m3
Sep 2006 31.50 µg/m3
Oct 2006 36.50 µg/m3
Nov 2006 43.80 µg/m3
Dec 2006 43.70 µg/m3
Average 2006 32.70 µg/m3
2007
Jan 2007 32.30 µg/m3
Feb 2007 44.00 µg/m3
Mar 2007 29.50 µg/m3
Apr 2007 33.50 µg/m3
May 2007 29.60 µg/m3
Jun 2007 30.50 µg/m3
Jul 2007 30.20 µg/m3
Aug 2007 33.60 µg/m3
Sep 2007 34.00 µg/m3
Oct 2007 50.80 µg/m3
Nov 2007 47.40 µg/m3
Average 2007 35.95 µg/m3
2008
Jan 2008 60.00 µg/m3
Feb 2008 57.80 µg/m3
Mar 2008 40.40 µg/m3
Apr 2008 36.90 µg/m3
May 2008 36.80 µg/m3
Jul 2008 30.20 µg/m3
Aug 2008 31.00 µg/m3
Nov 2008 39.60 µg/m3
Dec 2008 53.80 µg/m3
Average 2008 42.94 µg/m3
2009
Jan 2009 51.10 µg/m3
Mar 2009 42.50 µg/m3
Apr 2009 39.10 µg/m3
Average 2009 44.23 µg/m3
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