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Index Banded Annual Totals for Swansea:
LOW
42 days
MODERATE
25 days
HIGH
6 days
VERY HIGH
8 days

Current Readings for Hafod OPSIS DOAS: air quality data

Monitoring station: Hafod OPSIS DOAS
Last updated: GMT 22 Mar 2017 22:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO 71.78 g/m3 200.22 g/m3 22/03/2017 08:00 
NO2 82.09 g/m3 152.87 g/m3 22/03/2017 08:00 
O3 17.46 g/m3 90.33 g/m3 21/03/2017 10:00 
Benzene 3.05 g/m3 5.02 g/m3 22/03/2017 04:00 
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.