AURN Monitoring Site

London Bloomsbury (CLL2, an AURN site)

Latitude: 51.522290
Longitude: -0.125889
Date Started: 23/01/1992
Altitude: 20 metres
Environment: Urban Centre

Latest Data

This monitoring site data was last updated: 12/12/2018 09:00

Parameter Pollution Band Concentration Period
PM10 particulate matter (Hourly measured) Low (Index 2) 29 µg/m3 (TEOM FDMS) 24 Hour mean
PM2.5 particulate matter (Hourly measured) Low (Index 2) 23 µg/m3 (TEOM FDMS) 24 Hour mean
Sulphur dioxide (SO2) Low (Index 1) 4 µg/m3 15 Minute mean
Ozone (O3) Low (Index 1) 15 µg/m3 8 Hour mean
Nitrogen dioxide (NO2) Low (Index 1) 43 µg/m3 hourly mean
Nitric oxide (NO) not applicable 22 µg/m3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2) not applicable 77 µg/m3 hourly mean
Non-volatile PM10 (Hourly measured) not applicable 21 µg/m3 (TEOM FDMS) 24 Hour mean
Volatile PM10 (Hourly measured) not applicable 8 µg/m3 (TEOM FDMS) 24 Hour mean
Non-volatile PM2.5 (Hourly measured) not applicable 13 µg/m3 (TEOM FDMS) 24 Hour mean
Volatile PM2.5 (Hourly measured) not applicable 10 µg/m3 (TEOM FDMS) 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.

Map showing the location of the London Bloomsbury monitoring site