Air quality

We review and assess air quality in Dacorum on a regular basis. Air quality objectives have been set for the following seven key pollutants:

  • Benzene
  • 1,3-butadiene
  • Carbon monoxide
  • Lead
  • Nitrogen dioxide
  • PM10
  • Sulphur dioxide

The Department for Environment, Food and Rural Affairs (DEFRA) has more information on the health effects of these pollutants.

Air quality data and pollution forecasts

Air quality data and pollution forecasts for Dacorum are available on the Air Quality England website.

Air Quality Action Plan

Our Air Quality Action Plan details the measures we plan to take to improve air quality in the borough. The main aim is to reduce pollution from road traffic.

We are reviewing our Air Quality Action Plan for 2024-2029. We will publish it here soon.

Eco driving tips

The AA has tips on how you can reduce your emissions by driving more economically.

Assessment reports and maps

Local Air Quality Management (LAQM) review and assessment reports

Air Quality Management Areas (AQMAs)

Please note: For accessibility reasons we have provided the unofficial (unsealed) version of the Northchurch Revocation Order. You can request to see the official sealed order by emailing

Reporting smoky vehicles

Road traffic emissions are the main source of poor air quality in Dacorum. You can help reduce emissions by reporting smoky vehicles to the Driver and Vehicle Standards Agency (DVSA).

Report smoky lorries and buses to the DVSA

Page Last Updated: Monday, 05 February 2024 at 05:10 PM