DC Air Suffocates After Record Fireworks

Washington, D.C. experienced "very unhealthy" air quality on Sunday morning, with alerts issued for the metropolitan area. This degradation followed a large fireworks display on the evening of July 4th, which compounded existing poor air quality exacerbated by triple-digit temperatures earlier that day. The air quality index at McMillan Reservoir reached 157 by 10 a.m. EDT, indicating unhealthy fine particulate matter. In some areas, like King Greenleaf Recreation Center, the index peaked at 288 around 5 a.m. before dropping.

Authorities advised vulnerable populations—such as individuals with heart disease, asthma, older adults, children, and pregnant women—to reduce outdoor exposure. During periods of "very unhealthy" air, recommendations included avoiding strenuous outdoor activities. The National Park Service had reportedly been aware of concerns that the fireworks display might contribute to poor air pollution levels.