London Borough of Westminster Monitoring Data

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Westminster - Queens Park Gardens (WMS03)

Latitude: 51.528810
Longitude: -0.209361
Date Started: 01/04/2026
Inlet Height: 1.8 metres
Environment: Urban Background

Latest Data

This monitoring site data was last updated: Sorry, no current data available. The last data date time is: 18/04/2026 21:00

Parameter Pollution Band Concentration Period
Ozone (O3) Low (Index 3) 89 µg/m3 8 Hour mean
PM2.5 particulate matter (Hourly measured) Low (Index 1) 4 µg/m3 (BAM) 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.

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Map showing the location of the Westminster - Queens Park Gardens monitoring site