Daily Junction.mobi portalAir pollution causes an estimated 28,000-36,000 premature deaths in the UK annually, primarily from heart disease, stroke, lung cancer, and respiratory illness caused by long-term exposure to PM2.5 and NO2. Traffic is the largest source of urban air pollution, contributing 80% of NO2 and 50% of PM2.5 in cities, followed by domestic wood burning and industry. London has breached legal limits for nitrogen dioxide every year since 2010, though levels have fallen 50% since the Ultra Low Emission Zone was expanded in 2021. The UK government faces legal action for failing to meet WHO air quality guidelines, which are stricter than current UK legal limits. Achieving clean air requires adopting WHO guidelines as legal limits, expanding Low Emission Zones, accelerating the shift to electric vehicles, regulating wood burning, and investing in public transport and active travel.