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Index Banded Annual Totals for Swansea:
LOW
98 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)

 Copper Quarter 2 - facade diffusion tube
2007
Oct 2007 41.20 µg/m3
Nov 2007 45.40 µg/m3
Dec 2007 44.90 µg/m3
Average 2007 43.83 µg/m3
2008
Jan 2008 39.60 µg/m3
Feb 2008 43.70 µg/m3
Mar 2008 34.00 µg/m3
Apr 2008 29.90 µg/m3
May 2008 19.80 µg/m3
Jun 2008 24.10 µg/m3
Jul 2008 30.20 µg/m3
Aug 2008 24.30 µg/m3
Sep 2008 30.90 µg/m3
Nov 2008 39.30 µg/m3
Dec 2008 39.60 µg/m3
Average 2008 32.31 µg/m3
2009
Jan 2009 39.40 µg/m3
Feb 2009 42.40 µg/m3
Mar 2009 32.20 µg/m3
Apr 2009 29.50 µg/m3
Average 2009 35.88 µg/m3
2012
Jan 2012 42.00 µg/m3
Apr 2012 26.90 µg/m3
May 2012 19.50 µg/m3
Jun 2012 22.60 µg/m3
Jul 2012 18.90 µg/m3
Aug 2012 22.80 µg/m3
Average 2012 25.45 µg/m3
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