Written Question·Department for Environment, Food and Rural Affairs·UIN 21149

Nitrogen Oxides: Pollution Control

Tabled: 18 December 2024
Answered: 6 January 2025

Question

Carla Denyer

Green PartyBristol Central

To ask the Secretary of State for Environment, Food and Rural Affairs, pursuant to the Answer of 15 October 2024 to Question 7788 on Air Pollution, what guidance his Department provides on safe limits of NOx.

Answer

Emma Hardy
The Air Quality Standards Regulations (2010) set a limit of 40µg/m³ for the annual average concentration of NO₂ (a component of NOx). This threshold, determined with consideration of pertinent health guidelines, aims to safeguard human health. NOx is exte...

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