Air quality

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The Council has a duty to assess the air quality within the Borough. We aim, by working with various partners to improve the air quality for all.

The biggest cause of poor air quality in the UK is down to car fumes. Opting to drive less will help improve local air quality, but if you have to drive, there are things you can do to reduce your emissions.

The Council has drafted an updated Air Quality Action Plan for tackling air pollution across the borough and, as part of the public consultation process, invites you to view the draft documents about the councils proposed Air Quality Action Plan measures via the links below.

View the draft Air Quality Action Plan

View the Draft Action Plan Measures

We welcome all feedback on our draft updated Air Quality Action Plan, the questionnaire is now closed and thank those that completed it. If you missed the chance to complete it you can still email your comments on the document to All emails received before 30th April will be considered in our evaluation.

What causes poor air quality?

Air pollutants can be generated from local, national and international sources and travel long distances resulting in 'transboundary' pollution, e.g. Ozone.

The major pollutants and their main sources are:

  • Nitrogen Dioxide: Produced by petrol or diesel burning engines and coal/oil burning furnaces
  • Sulphur Dioxide: Produced by burning fossil fuels (e.g. fuel oil and coal)
  • Carbon Monoxide: Produced by the incomplete burning of carbon-containing fuels, such as petrol, coal and wood
  • Particles (PM10): Produced by diesel vehicles, power stations, industrial processes, mining and quarrying, and domestic sources
  • Benzene: Produced by petrol burning engines, diesel burning engines and petrol evaporation from vehicles
  • 1, 3-Butadiene: Produced by the combustion of petrol and diesel fuel, house fires and the burning of other fossil fuels
  • Lead: Produced by petrol burning engines and industrial combustion plants and processes.

How do I find out about current air quality?

Information about the current air quality and monitoring results can be found on the Kent and Medway Air Quality Network

What duties are placed on the Council to improve air quality?

The Environment Act 1995 (part IV) placed a duty on Local Authorities to review and assess their local air quality through the process of Local Air Quality Management.

Local Air Quality Management (LAQM)

The basis of the process is to regularly review and assess measured and predicted levels of the pollutants listed above against their respective Air Quality Objective. Where it is unlikely that the objective will be met by the objective date, the Local Authority must declare an Air Quality Management Area (AQMA). We have declared 6 AQMAs across the Borough in areas where the annual objective for Nitrogen dioxide is not being met.

These are:

  1. M20 - between New Hythe Lane, Larkfield and Hall Road, Aylesford Map
  2. Tonbridge High Street (south) between Botany and the High Street/ Vale Road roundabout. Map
  3. A26 - Red Hill/ Tonbridge Road junction, Wateringbury Map
  4. A20 Larkfield- London Road/New Hythe Lane junction and London Road (A20) towards Ditton. Map
  5. A20 Aylesford- London Road/ Hall Road junction and London Road (A20) Map
  6. Borough Green - incorporates the triangle area of Western Road, High Street and Sevenoaks Road (A25). Map

The AQMA in Ditton at the crossroads with Station Road and London road A20 has now been revoked.

The Council monitors using:

  1. 72 Diffusion tubes located at 56 sites across the Borough.
  2. A continuous NOx analyser sited in Wateringbury crossroads, which measures the levels of pollutants 24 hours a day.

Please read our latest Annual Status Report.

If you wish to discuss any issue on this page please contact the Environmental Protection Team