Cheshire West and Chester Council Monitoring Data
Cheshire West & Chester - Helsby (HELSB)
Environment: Urban Background
This monitoring site data was last updated: Sorry, no current data available. The last data date time is: 28/02/2021 23:00
|PM10 particulate matter (Hourly measured)||Low (Index 2)||26 µg/m3 (FIDAS)||24 Hour mean|
|PM2.5 particulate matter (Hourly measured)||Low (Index 2)||21 µg/m3 (Ref.eq)||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.