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Index Banded Annual Totals for Swansea:
LOW
93 days
MODERATE
18 days
HIGH
1 day
VERY HIGH
4 days

Current Readings for Hafod OPSIS DOAS: air quality data

Monitoring station: Hafod OPSIS DOAS
Last updated: GMT 25 Apr 2024 07:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO 0.00 µg/m3 0.00 µg/m3 25/04/2024 07:00 
NO2 83.31 µg/m3 83.31 µg/m3 25/04/2024 07:00 
O3 27.25 µg/m3 52.66 µg/m3 25/04/2024 02:00 
Benzene 3.33 µg/m3 3.72 µg/m3 24/04/2024 23:00 
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.