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Index Banded Annual Totals for Swansea:
LOW
239 days
MODERATE
56 days
HIGH
12 days
VERY HIGH
25 days

Current Readings for Hafod OPSIS DOAS: air quality data

Monitoring station: Hafod OPSIS DOAS
Last updated: GMT 28 Nov 2021 03:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO 0.00 g/m3 21.02 g/m3 26/11/2021 16:00 
NO2 0.00 g/m3 34.13 g/m3 26/11/2021 17:00 
O3 0.00 g/m3 92.84 g/m3 27/11/2021 00:00 
Benzene 0.00 g/m3 4.83 g/m3 27/11/2021 00:00 
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.