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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)

 Orchard Street - facade diffusion tube
2007
Oct 2007 54.20 µg/m3
Nov 2007 41.80 µg/m3
Dec 2007 48.70 µg/m3
Average 2007 48.23 µg/m3
2008
Jan 2008 46.50 µg/m3
Feb 2008 56.30 µg/m3
Mar 2008 38.30 µg/m3
Apr 2008 45.40 µg/m3
May 2008 52.00 µg/m3
Jun 2008 34.80 µg/m3
Jul 2008 34.90 µg/m3
Aug 2008 36.00 µg/m3
Sep 2008 42.50 µg/m3
Oct 2008 49.00 µg/m3
Nov 2008 42.00 µg/m3
Dec 2008 32.10 µg/m3
Average 2008 42.48 µg/m3
2009
Jan 2009 45.40 µg/m3
Feb 2009 46.90 µg/m3
Mar 2009 46.60 µg/m3
Apr 2009 49.10 µg/m3
Average 2009 47.00 µg/m3
2012
Jan 2012 67.00 µg/m3
Apr 2012 36.40 µg/m3
May 2012 37.70 µg/m3
Jun 2012 38.80 µg/m3
Jul 2012 35.50 µg/m3
Aug 2012 39.20 µg/m3
Average 2012 42.43 µg/m3
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