Question to the Department for Environment, Food and Rural Affairs:

To ask the Secretary of State for Environment, Food and Rural Affairs, what assessment she has made of the potential merits of reducing the limit value for particulate matter from 25g/m3 to the World Health Organisation's air quality guidelines of 10g/m3.

Latest compliance data show that the UK is meeting the EU daily and annual mean limits values for particulate matter (PM) concentrations at both PM₁₀ and PM_2.5 size categories.

No specific assessment has been made of the potential merits of reducing the limit value for PM from EU limit values to the World Health Organisation air quality guidelines