Written Question·Department for Environment, Food and Rural Affairs·UIN 102736

Air Pollution

Tabled: 5 January 2026

Answered: 13 January 2026

Question

Tim Farron

Liberal Democrat — Westmorland and Lonsdale

To ask the Secretary of State for Environment, Food and Rural Affairs, what the difference is in legal duties and obligations between limit values under the Air Quality Standards Regulations and air quality targets for PM2.5 concentrations set in the Envi

Answer

Emma Hardy

The Air Quality Standards Regulations (AQSR) 2010 establish legally binding standards across the UK, for numerous air pollutants, including PM2.5. The AQSR limit value for PM2.5 concentrations is 20 micrograms per cubic meter in England and responsibility...

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