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Index Banded Annual Totals for Swansea:
LOW
42 days
MODERATE
5 days
HIGH
0 days
VERY HIGH
4 days

Current Readings for Hafod OPSIS DOAS: air quality data

Monitoring station: Hafod OPSIS DOAS
Last updated: GMT 20 Feb 2024 06:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO 14.62 g/m3 24.15 g/m3 20/02/2024 03:00 
NO2 19.44 g/m3 60.94 g/m3 20/02/2024 03:00 
O3 69.34 g/m3 74.23 g/m3 20/02/2024 01:00 
Benzene 3.78 g/m3 3.78 g/m3 20/02/2024 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.