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. They should.
The South Coast Air Quality Management District issued a formal particle pollution advisory for Southern California on July 2–3, 2026, warning that the Air Quality Index could reach the hazardous category in parts of Los Angeles and Orange counties as fireworks smoke accumulated. In Washington, D.C., CNN confirmed the city experienced Code Red air quality on the morning of July 5 — the worst air quality of any major city in the world at that moment — after the record-breaking 40-minute National Mall fireworks display launched hundreds of thousands of shells across 10 sites.
