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Index Banded Annual Totals for Swansea:
LOW
31 days
MODERATE
11 days
HIGH
5 days
VERY HIGH
6 days

Current Readings for St Thomas DOAS: air quality data

Monitoring station: St Thomas DOAS
Last updated: GMT 22 Feb 2017 23:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO2 11.41 g/m3 35.22 g/m3 21/02/2017 08:00 
SO2 0.97 g/m3 4.34 g/m3 21/02/2017 05:00 
O3 89.05 g/m3 100.06 g/m3 22/02/2017 02:00 
Benzene 1.27 g/m3 2.46 g/m3 22/02/2017 16:00 
Current Value = The hourly average
Highest Reading = Highest hourly average within the last 24 hour period

All data supplied are non-validated and for information only.