Hertfordshire and Bedfordshire Monitoring Data
Welwyn Hatfield (HB001)
Environment: Urban Traffic
This monitoring site data was last updated: 10/12/2023 22:00
|PM2.5 particulate matter (Hourly measured)||Low (Index 1)||6 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.
Other monitoring sites
Use the dropdown below to switch to another monitoring site within this local authority.