Site Information for London Westminster(UKA00435)

London Westminster Information

The monitoring station is located within a self contained housing in the car park of the mortuary and coroner's court. The nearest road is the B323 Horseferry Road approximately 17 metres north of the station. The surrounding area is mixed commercial and residential.


EU Site ID: GB0743A

Altitude (metres): 5

Environment Type: Urban Background

PM2.5 Targets This site is used in the assessment of both the Annual Mean Concentration Target (AMCT) and Population Exposure Reduction Target (PERT) under the Environmental Target (Fine Particulate Matter) (England) Regulations 2023, subject to meeting the inclusion criteria on an annual basis. To find out more about how measurements are used to calculate progress towards the targets and which sites have met the inclusion criteria in different years, please see the PM2.5 target calculation page.

Site Location

Environment Type: Urban Background

Site Address: London

Government Region: Greater London

Easting/Northing: 529778, 178957

Latitude/Longitude: 51.494670, -0.131931

The static map below shows where the monitoring site is located.

Map showing the location of this monitoring site
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The Partners who operate networks at this monitoring sites are shown in the table below. Clicking on the Partner name will open their website in a new window.

Operator Networks
National Physical Laboratory Heavy Metals Network
Bureau Veritas Automatic Urban Monitoring Network

Pollutants measured at this monitoring site

The pollutants measured at this monitoring site, grouped by network, are shown below. Use the links below to quickly jump to a specific network.

Automatic Urban Monitoring Network

Pollutant Start Date End Date Inlet Height (m) Hourly PM Measurement method
Ozone 17/07/2001 - 4.0
Nitric oxide 17/07/2001 - 4.0
Nitrogen dioxide 17/07/2001 - 4.0
Nitrogen oxides as nitrogen dioxide 17/07/2001 - 4.0
Sulphur dioxide 17/07/2001 19/07/2012 4.0
Carbon monoxide 17/07/2001 19/07/2012 4.0
PM2.5 particulate matter (Hourly measured) 01/04/2018 - 3.0 BAM1020heated
PM10 particulate matter (Daily measured) 19/02/2003 24/12/2008 Not available
PM2.5 particulate matter (Daily measured) 25/12/2008 28/02/2018 4.0
Daily measured PM10 (uncorrected) 19/02/2003 24/12/2008 Not available
Daily measured PM2.5 (uncorrected) 25/12/2008 31/12/2012 Not available
Modelled Wind Direction 01/08/2010 - Not available
Modelled Wind Speed 01/08/2010 - Not available
Modelled Temperature 01/08/2010 - Not available

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Heavy Metals Network

Pollutant Start Date End Date Inlet Height (m)
Arsenic 01/01/2004 - 4.0
Cadmium 01/01/2004 - 4.0
Chromium 01/01/2004 - 4.0
Cobalt 01/04/2011 - 4.0
Copper 01/01/2004 - 4.0
Iron 01/01/2004 - 4.0
Lead 01/01/2004 - 4.0
Manganese 01/01/2004 - 4.0
mercury in PM10 01/01/2004 31/12/2013 4.0
total gaseous mercury 01/01/2004 14/08/2018 4.0
Nickel 01/01/2004 - 4.0
Platinum 01/01/2004 31/12/2013 4.0
Selenium 01/04/2011 - 4.0
Vanadium 01/01/2004 - 4.0
Zinc 01/01/2004 - 4.0

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Networks measured at this monitoring site

The listing below shows the networks that this monitoring site belongs to. You can search for sites within these networks by clicking on their name, or use the network information links to find out more about them.

Network Search Further Details Get Data
Automatic Urban and Rural Monitoring Network (AURN) Automatic Urban and Rural Monitoring Network (AURN) About network Latest pollution summary
Current Levels
Pre-Formatted Data Files
Heavy Metals Heavy Metals About network Metals data download page
Data Selector