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Index Banded Annual Totals for Swansea:
LOW
103 days
MODERATE
43 days
HIGH
6 days
VERY HIGH
15 days

Current Readings for Hafod OPSIS DOAS: air quality data

Monitoring station: Hafod OPSIS DOAS
Last updated: GMT 16 Jun 2021 09:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO 35.71 g/m3 69.91 g/m3 15/06/2021 07:00 
NO2 19.36 g/m3 49.96 g/m3 15/06/2021 07:00 
O3 48.66 g/m3 71.30 g/m3 15/06/2021 13:00 
Benzene 4.50 g/m3 5.83 g/m3 15/06/2021 13:00 
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.