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Index Banded Annual Totals for Swansea:
LOW
31 days
MODERATE
11 days
HIGH
5 days
VERY HIGH
6 days

Current Readings for Hafod OPSIS DOAS: air quality data

Monitoring station: Hafod OPSIS DOAS
Last updated: GMT 22 Feb 2017 23:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO 0.00 g/m3 23.83 g/m3 21/02/2017 08:00 
NO2 9.37 g/m3 29.08 g/m3 21/02/2017 08:00 
O3 68.94 g/m3 85.06 g/m3 22/02/2017 03:00 
Benzene 1.39 g/m3 1.78 g/m3 22/02/2017 17:00 
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.