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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)

 18/20 Vivian Road - facade diffusion tube
2008
Jul 2008 33.50 µg/m3
Aug 2008 37.20 µg/m3
Sep 2008 52.20 µg/m3
Oct 2008 42.20 µg/m3
Nov 2008 39.20 µg/m3
Dec 2008 46.00 µg/m3
Average 2008 41.72 µg/m3
2009
Jan 2009 46.90 µg/m3
Feb 2009 42.70 µg/m3
Mar 2009 40.30 µg/m3
Apr 2009 67.50 µg/m3
Average 2009 49.35 µg/m3
2012
Jan 2012 47.20 µg/m3
Apr 2012 29.40 µg/m3
May 2012 38.00 µg/m3
Jun 2012 36.60 µg/m3
Jul 2012 25.60 µg/m3
Aug 2012 35.20 µg/m3
Average 2012 35.33 µg/m3
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