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Index Banded Annual Totals for Swansea:
LOW
227 days
MODERATE
96 days
HIGH
2 days
VERY HIGH
0 days

Current Readings for Hafod OPSIS DOAS: air quality data

Monitoring station: Hafod OPSIS DOAS
Last updated: GMT 21 Nov 2018 18:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO 77.60 g/m3 135.86 g/m3 21/11/2018 17:00 
NO2 55.11 g/m3 85.09 g/m3 21/11/2018 17:00 
O3 23.48 g/m3 50.29 g/m3 20/11/2018 10:00 
Benzene 0.00 g/m3 1.94 g/m3 21/11/2018 05:00 
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.