questionText: To ask the Secretary of State for Environment, Food and Rural Affairs, when she expects the World Health Organization’s Air Quality Guideline levels for (a) PM2.5 and (b) NO2 pollution to be met.
answerText: The WHO air quality guidelines are intended to inform the setting of air quality standards and are not ready-made targets for adoption as they do not take into account achievability or individual countries’ circumstances. For example, our evidence strongl...
heading: Air Pollution: Standards