Fourth of July Fireworks Pollute the Air in Ways That Are Invisible but Dangerous for Millions with Asthma and Heart Disease

Most people attending July 4 fireworks think about their eyes and hands — the injury risk from sparks and debris. They do not think about the air they breathe for hours after the show ends. The AQMD issued hazardous PM2.5 advisories for July 4–5. DC hit Code Red air quality on July 5. Here's the post-fireworks health risk window for asthma, COPD, and heart disease.