London Borough of Westminster Monitoring Data

« Return to local authority summary

Westminster - Covent Garden (WMS05)

Latitude: 51.512090
Longitude: -0.121717
Date Started: 29/06/2009
Inlet Height: 2 metres
Environment: Urban Background

Latest Data

This monitoring site data was last updated: 28/05/2026 15:00

Parameter Pollution Band Concentration Period
PM2.5 particulate matter (Hourly measured) Low (Index 2) 17 µg/m3 (BAM) 24 Hour mean
Nitrogen dioxide (NO2) Low (Index 1) 13 µg/m3 hourly mean
Nitric oxide (NO) not applicable 0 µg/m3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2) not applicable 14 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.

Other monitoring sites

Use the dropdown below to switch to another monitoring site within this local authority.

Map showing the location of the Westminster - Covent Garden monitoring site