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Index Banded Annual Totals for Swansea:
LOW
154 days
MODERATE
54 days
HIGH
1 day
VERY HIGH
0 days

Current Readings for Hafod OPSIS DOAS: air quality data

Monitoring station: Hafod OPSIS DOAS
Last updated: GMT 28 Jul 2017 09:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO 18.15 g/m3 37.05 g/m3 27/07/2017 06:00 
NO2 14.43 g/m3 31.43 g/m3 27/07/2017 06:00 
O3 43.55 g/m3 63.70 g/m3 26/07/2017 15:00 
Benzene 1.94 g/m3 2.04 g/m3 28/07/2017 06:00 
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.