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Index Banded Annual Totals for Swansea:
LOW
254 days
MODERATE
65 days
HIGH
4 days
VERY HIGH
1 day

Current Readings for St Thomas DOAS: air quality data

Monitoring station: St Thomas DOAS
Last updated: GMT 20 Nov 2017 19:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO2 25.16 g/m3 58.86 g/m3 19/11/2017 15:00 
SO2 1.41 g/m3 22.80 g/m3 19/11/2017 14:00 
O3 79.09 g/m3 96.36 g/m3 20/11/2017 04:00 
Benzene 0.63 g/m3 2.96 g/m3 19/11/2017 19:00 
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.