AURN Monitoring Site

London Marylebone Road (MY1, an AURN site)

Latitude: 51.522530
Longitude: -0.154611
Date Started: 01/01/1997
Altitude: 35 metres
Inlet Height: 3.5 metres
Environment: Kerbside

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) 31 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) 5 µg/m3 15 Minute mean
Nitrogen dioxide (NO2) Low (Index 1) 66 µg/m3 hourly mean
Ozone (O3) Low (Index 1) 14 µg/m3 8 Hour mean
Nitric oxide (NO) not applicable 142 µg/m3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2) not applicable 283 µg/m3 hourly mean
Carbon monoxide (CO) not applicable 0.9 mg/m3 8 Hour mean
Non-volatile PM10 (Hourly measured) not applicable 27 µg/m3 (TEOM FDMS) 24 Hour mean
Volatile PM10 (Hourly measured) not applicable 5 µg/m3 (TEOM FDMS) 24 Hour mean
Non-volatile PM2.5 (Hourly measured) not applicable 18 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 Marylebone Road monitoring site