Air pollution and asthma reveals a devastating global health crisis affecting millions of people worldwide. Research shows that for every 10 μg/m³ increment in PM2.5, the risk of childhood and adult asthma increases by 21.4%, with nearly a third of all global asthma cases attributable to long-term particulate matter exposure. In the UK alone, 10% of adults have asthma and every 10 seconds someone suffers a potentially fatal asthma attack, with GP visits for asthma increasing by 45% in a single year as 99% of the population breathes "toxic air." Discover the compelling evidence linking air quality to this most widespread chronic respiratory condition and what protective measures can reduce exposure risks.