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Index Banded Annual Totals for Swansea:
LOW
101 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)

 18 Ravenhill Road, Fforestfach - facade diffusion tube
2005
Oct 2005 52.40 µg/m3
Nov 2005 50.20 µg/m3
Dec 2005 51.50 µg/m3
Average 2005 51.37 µg/m3
2006
Jan 2006 59.80 µg/m3
Feb 2006 54.00 µg/m3
Mar 2006 43.40 µg/m3
Apr 2006 41.40 µg/m3
May 2006 45.50 µg/m3
Jun 2006 44.80 µg/m3
Jul 2006 50.00 µg/m3
Aug 2006 28.00 µg/m3
Sep 2006 46.30 µg/m3
Oct 2006 52.90 µg/m3
Nov 2006 49.30 µg/m3
Average 2006 46.85 µg/m3
2007
Jan 2007 37.50 µg/m3
Feb 2007 54.70 µg/m3
Mar 2007 43.30 µg/m3
Apr 2007 50.90 µg/m3
May 2007 32.00 µg/m3
Jun 2007 40.80 µg/m3
Jul 2007 33.60 µg/m3
Aug 2007 36.40 µg/m3
Sep 2007 38.30 µg/m3
Oct 2007 62.50 µg/m3
Nov 2007 51.30 µg/m3
Dec 2007 57.60 µg/m3
Average 2007 44.91 µg/m3
2008
Jan 2008 52.50 µg/m3
Feb 2008 62.20 µg/m3
Mar 2008 41.20 µg/m3
Apr 2008 50.70 µg/m3
May 2008 59.00 µg/m3
Jun 2008 37.00 µg/m3
Jul 2008 34.10 µg/m3
Aug 2008 31.60 µg/m3
Sep 2008 53.70 µg/m3
Oct 2008 51.50 µg/m3
Nov 2008 47.00 µg/m3
Dec 2008 39.40 µg/m3
Average 2008 46.66 µg/m3
2009
Jan 2009 49.30 µg/m3
Feb 2009 55.40 µg/m3
Mar 2009 18.80 µg/m3
Apr 2009 65.90 µg/m3
Average 2009 47.35 µg/m3
2012
Jan 2012 49.40 µg/m3
Apr 2012 29.10 µg/m3
May 2012 37.80 µg/m3
Jun 2012 34.80 µg/m3
Jul 2012 26.50 µg/m3
Aug 2012 24.10 µg/m3
Average 2012 33.62 µg/m3
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