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Index Banded Annual Totals for Swansea:
LOW
65 days
MODERATE
73 days
HIGH
1 day
VERY HIGH
0 days

Current Readings for St Thomas DOAS: air quality data

Monitoring station: St Thomas DOAS
Last updated: GMT 19 May 2019 21:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO2 44.32 g/m3 56.93 g/m3 18/05/2019 00:00 
SO2 1.07 g/m3 2.91 g/m3 18/05/2019 18:00 
O3 76.15 g/m3 109.34 g/m3 18/05/2019 12:00 
Benzene 0.08 g/m3 1.96 g/m3 19/05/2019 18:00 
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.