Tool Details

Background maps
Developed by Defra LAQM support helpdesk - Tools by this owner (13)


Background maps are provided to assist UK Local Authorities with their Review and Assessment of air quality, where local monitoring data is not available. Background concentrations are provided for each 1 * 1 kilometre grid square by Local Authority. Concentrations are available for a 2011 base year and at yearly intervals up to 2030. If modellers subtract emission sectors from the NOx background maps, they must update the NO2 map accordingly.

This tool can be used to justify the process i.e. help assess air pollutant concentrations.


  • Target Group:
    • Environmental policy officers
  • Impacts Assessed:
    • Air Pollution Emissions


  • Cost:
    • Free
Background maps


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