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Index Banded Annual Totals for Swansea:
LOW
254 days
MODERATE
65 days
HIGH
4 days
VERY HIGH
1 day

Current Readings for Hafod OPSIS DOAS: air quality data

Monitoring station: Hafod OPSIS DOAS
Last updated: GMT 20 Nov 2017 19:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO 11.24 g/m3 111.77 g/m3 19/11/2017 16:00 
NO2 15.70 g/m3 105.35 g/m3 19/11/2017 16:00 
O3 63.50 g/m3 76.53 g/m3 20/11/2017 01:00 
Benzene 0.82 g/m3 5.21 g/m3 19/11/2017 19:00 
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.