AURN Monitoring Site

Chilbolton Observatory (CHBO, an AURN site)

Latitude: 51.149617
Longitude: -1.438228
Date Started: 11/01/2016
Altitude: 78 metres
Inlet Height: 7 metres

Latest Data

This monitoring site data was last updated: 12/12/2018 10:00

Parameter Pollution Band Concentration Period
Ozone (O3) Low (Index 2) 48 µg/m3 8 Hour mean
Nitrogen dioxide (NO2) Low (Index 1) 18 µg/m3 hourly mean
Sulphur dioxide (SO2) Low (Index 1) 2 µg/m3 15 Minute mean
PM10 particulate matter (Hourly measured) Low (Index 1) 11 µg/m3 (FIDAS) 24 Hour mean
PM2.5 particulate matter (Hourly measured) Low (Index 1) 7 µg/m3 (Ref.eq) 24 Hour mean
Nitric oxide (NO) not applicable 2 µg/m3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2) not applicable 20 µg/m3 hourly 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.

Map showing the location of the Chilbolton Observatory monitoring site