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Index Banded Annual Totals for Swansea:
LOW
177 days
MODERATE
53 days
HIGH
4 days
VERY HIGH
24 days

Current Readings for St Thomas DOAS: air quality data

Monitoring station: St Thomas DOAS
Last updated: GMT 21 Sep 2023 14:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO2 18.52 g/m3 41.60 g/m3 21/09/2023 07:00 
SO2 0.00 g/m3 0.00 g/m3 21/09/2023 14:00 
O3 49.75 g/m3 69.55 g/m3 20/09/2023 15:00 
Benzene 0.00 g/m3 0.69 g/m3 20/09/2023 22:00 
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.