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: Sorry, no current data available. The last data date time is: 20/05/2019 22:00

Parameter Pollution Band Concentration Period
Ozone (O3) Low (Index 2) 51 µg/m3 8 Hour mean
PM10 particulate matter (Hourly measured) Low (Index 2) 21 µg/m3 (TEOM FDMS) 24 Hour mean
PM2.5 particulate matter (Hourly measured) Low (Index 2) 15 µg/m3 (TEOM FDMS) 24 Hour mean
Nitrogen dioxide (NO2) Low (Index 1) 50 µg/m3 hourly mean
Sulphur dioxide (SO2) Low (Index 1) 5 µg/m3 15 Minute mean
Nitric oxide (NO) not applicable 2 µg/m3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2) not applicable 53 µg/m3 hourly mean
Non-volatile PM10 (Hourly measured) not applicable 15 µg/m3 (TEOM FDMS) 24 Hour mean
Volatile PM10 (Hourly measured) not applicable 6 µg/m3 (TEOM FDMS) 24 Hour mean
Non-volatile PM2.5 (Hourly measured) not applicable 10 µg/m3 (TEOM FDMS) 24 Hour mean
Volatile PM2.5 (Hourly measured) not applicable 5 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