Hertfordshire and Bedfordshire Monitoring Data
Welwyn Hatfield (HB001)
Environment: Urban Traffic
This monitoring site data was last updated: 14/04/2021 13:00
|PM2.5 particulate matter (Hourly measured)||Low (Index 1)||9 µg/m3 (BAM)||24 Hour mean|
Note: Values are based on provisional data. Data are GMT hour ending.
PM10 is measured as a running 24 hour mean, up to the current hour, and the band/index is calculated accordingly.
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