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Index Banded Annual Totals for Swansea:
LOW
172 days
MODERATE
90 days
HIGH
2 days
VERY HIGH
0 days

Current Readings for St Thomas DOAS: air quality data

Monitoring station: St Thomas DOAS
Last updated: GMT 21 Sep 2019 01:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO2 27.77 g/m3 83.51 g/m3 19/09/2019 18:00 
SO2 4.61 g/m3 24.56 g/m3 20/09/2019 19:00 
O3 74.23 g/m3 86.28 g/m3 19/09/2019 14:00 
Benzene 3.40 g/m3 4.58 g/m3 20/09/2019 20:00 
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.