Summary of monitoring sites

This page shows a summary of the active and closed monitoring sites in Kent and Medway.

Click on the site name to see more information about it.

Active monitoring sites

Monitoring site Band/Index Last updated
Canterbury Military Road
District Council : Canterbury
LOW 1 30/06/2025 16:00
Chatham Roadside
District Council : Medway
LOW 1 30/06/2025 16:00
Dartford - St Clements 2
District Council : Dartford
LOW 2 30/06/2025 14:00
Gravesham A2 Roadside
District Council : Gravesham
LOW 1 30/06/2025 15:00
London Bexley
District Council : Bexley
LOW 1 30/06/2025 16:00
Maidstone Upper Stone Street
District Council : Maidstone
LOW 1 30/06/2025 15:00
Rochester Stoke
District Council : Medway
LOW 3 30/06/2025 16:00
Stanford-le-Hope Roadside
District Council : Thurrock
LOW 1 30/06/2025 16:00
Swale Newington 4
District Council : Swale
LOW 1 30/06/2025 15:00
Swale Ospringe Roadside 2
District Council : Swale
LOW 1 30/06/2025 16:00
Swale St Pauls Street
District Council : Swale
LOW 3 30/06/2025 15:00
Thanet Birchington Roadside
District Council : Thanet
LOW 2 30/06/2025 15:00
Thanet Ramsgate Roadside
District Council : Thanet
LOW 2 30/06/2025 15:00
Thurrock
District Council : Thurrock
LOW 1 30/06/2025 16:00
Tonbridge and Malling, Borough Green Roadside
District Council : Tonbridge
LOW 1 30/06/2025 16:00
Tonbridge High Street
District Council : Tonbridge
LOW 1 30/06/2025 16:00
Tunbridge Wells A26 Roadside
District Council : Tunbridge Wells
LOW 2 30/06/2025 15:00

Find out more about the bands


Closed Monitoring Sites

Monitoring sites may be closed for a number of reasons which are not recorded on a case-by-case basis here. These include:

  • Concentrations are consistently well below objectives so monitoring is no longer required at a particular location.
  • The overall statutory minimum number of monitoring sites in Kent and Medway is reduced due to general declining concentrations of some pollutants e.g. sulphur dioxide and carbon monoxide.
  • The site was only established for a short-term investigative study, e.g for an environmental impact assessment.

Historical data and statistics for closed monitoring sites can still be accessed by clicking the link even though they no longer report data for the real-time information services.

Monitoring site Date Ended
Ashford Background [Closed] 07/04/2011
Ashford M20 Background [Closed] 10/11/2010
Ashford Roadside [Closed] 18/09/2008
Ashford Rural [Closed] 18/01/2001
Canterbury [Closed] 04/11/2024
Canterbury Roadside [Closed] 07/04/2016
Canterbury St. Peters Place [Closed] 07/04/2016
Chatham Luton Background [Closed] 20/03/2014
Dartford Bean Interchange Roadside [Closed] 12/10/2020
Dartford St Clements Roadside [Closed] 22/03/2018
Dartford Town Centre Roadside [Closed] 23/02/2023
Dover Background 2 [Closed] 15/04/2006
Dover Centre Roadside [Closed] 07/04/2025
Dover Coast Guard Met [Closed] 30/09/2001
Dover Docks [Closed] 02/01/2013
Dover Langdon Cliff [Closed] 04/03/2010
Dover Old Town Hall Roadside [Closed] 24/01/2012
Folkestone Suburban [Closed] 24/01/2012
Gravesham Background [Closed] 24/08/2001
Gravesham Industrial Background [Closed] 07/03/2024
Maidstone A229 Kerbside [Closed] 14/06/2016
Maidstone Meteorological [Closed] 14/01/2001
Maidstone Rural [Closed] 15/01/2025
Sevenoaks 1 [Closed] 01/09/1997
Swale Canterbury Road [Closed] 13/10/2016
Swale Newington 3 [Closed] 07/04/2021
Swale Roadside [Closed] 01/08/2008
Swale Sheerness [Closed] 09/11/2010
Thanet Airport [Closed] 07/04/2016
Thanet Margate Background [Closed] 31/03/2013
Thanet Rural [Closed] 13/05/2008
Tonbridge & Malling Wateringbury Roadside [Closed] 07/10/2021
Tonbridge Roadside [Closed] 27/09/2004
Tonbridge Roadside 2 [Closed] 27/06/2020
Tunbridge Wells Southborough [Closed] 25/05/2000
Tunbridge Wells Town Centre [Closed] 24/01/2012