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Index Banded Annual Totals for Swansea:
LOW
104 days
MODERATE
21 days
HIGH
1 day
VERY HIGH
5 days

Current Readings for Hafod OPSIS DOAS: air quality data

Monitoring station: Hafod OPSIS DOAS
Last updated: GMT 10 May 2024 10:00
Measurement Current Value Highest Reading Date and Time of
Highest Reading
NO 0.00 µg/m3 0.00 µg/m3 10/05/2024 10:00 
NO2 39.70 µg/m3 101.28 µg/m3 09/05/2024 19:00 
O3 69.31 µg/m3 80.17 µg/m3 09/05/2024 14:00 
Benzene 4.60 µg/m3 5.05 µg/m3 09/05/2024 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.