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Index Banded Annual Totals for Swansea:
LOW
78 days
MODERATE
69 days
HIGH
0 days
VERY HIGH
4 days

Current Readings for Hafod OPSIS DOAS: air quality data

Monitoring station: Hafod OPSIS DOAS
Last updated: GMT 30 May 2020 12:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO 0.00 g/m3 239.31 g/m3 28/05/2020 21:00 
NO2 6.54 g/m3 73.20 g/m3 29/05/2020 22:00 
O3 121.08 g/m3 133.57 g/m3 29/05/2020 15:00 
Benzene 0.00 g/m3 12.13 g/m3 29/05/2020 21:00 
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.