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Index Banded Annual Totals for Swansea:
LOW
125 days
MODERATE
93 days
HIGH
1 day
VERY HIGH
5 days

Current Readings for Hafod OPSIS DOAS: air quality data

Monitoring station: Hafod OPSIS DOAS
Last updated: GMT 13 Aug 2020 03:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO 21.06 g/m3 84.95 g/m3 11/08/2020 06:00 
NO2 25.40 g/m3 66.27 g/m3 12/08/2020 09:00 
O3 64.95 g/m3 92.22 g/m3 12/08/2020 13:00 
Benzene 2.93 g/m3 7.53 g/m3 11/08/2020 07:00 
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.