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Index Banded Annual Totals for Swansea:
LOW
169 days
MODERATE
96 days
HIGH
1 day
VERY HIGH
5 days

Current Readings for St Thomas DOAS: air quality data

Monitoring station: St Thomas DOAS
Last updated: GMT 29 Sep 2020 16:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO2 21.94 g/m3 59.21 g/m3 28/09/2020 00:00 
SO2 1.31 g/m3 8.83 g/m3 28/09/2020 11:00 
O3 44.86 g/m3 53.13 g/m3 29/09/2020 14:00 
Benzene 3.09 g/m3 6.54 g/m3 29/09/2020 02:00 
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.