London Borough of Westminster Monitoring Data

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Westminster - Oxford Street (WMS06)

Latitude: 51.513980
Longitude: -0.152682
Date Started: 08/02/2013
Inlet Height: 1.5 metres
Environment: Urban Traffic
Site Comments
Located on a very busy road with high footfall and categorised as a focus area.

Latest Data

This monitoring site data was last updated: 11/05/2026 17:00

Parameter Pollution Band Concentration Period
Nitrogen dioxide (NO2) Low (Index 1) 20 µg/m3 hourly mean
PM2.5 particulate matter (Hourly measured) Low (Index 1) 8 µg/m3 (BAM) 24 Hour mean
Nitric oxide (NO) not applicable 6 µg/m3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2) not applicable 28 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.

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Map showing the location of the Westminster - Oxford Street monitoring site