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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)

 Anchorage 57 Cefn Glas - facade diffusion tube
2008
Jul 2008 22.60 µg/m3
Aug 2008 17.50 µg/m3
Sep 2008 23.70 µg/m3
Oct 2008 34.00 µg/m3
Nov 2008 40.00 µg/m3
Dec 2008 47.10 µg/m3
Average 2008 30.82 µg/m3
2009
Jan 2009 40.30 µg/m3
Feb 2009 39.60 µg/m3
Mar 2009 42.70 µg/m3
Apr 2009 37.00 µg/m3
Average 2009 39.90 µg/m3
2012
Jan 2012 44.30 µg/m3
Apr 2012 31.50 µg/m3
May 2012 27.50 µg/m3
Jun 2012 18.60 µg/m3
Jul 2012 19.40 µg/m3
Aug 2012 21.90 µg/m3
Average 2012 27.20 µg/m3
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