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Index Banded Annual Totals for Swansea:
LOW
169 days
MODERATE
96 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 29 Sep 2020 14:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO 26.37 g/m3 187.85 g/m3 29/09/2020 07:00 
NO2 13.96 g/m3 67.66 g/m3 28/09/2020 13:00 
O3 50.57 g/m3 53.24 g/m3 29/09/2020 11:00 
Benzene 3.05 g/m3 4.48 g/m3 28/09/2020 11:00 
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.