- DC experiences ‘Code Red’ air quality after massive fireworks display CNN
- Code Purple Air Quality Alert for DC and Northern Virginia Sunday WUSA9
- D.C. suffers from a July 4 hangover after 250 extravaganza Axios
- Bombs Bursting in Air Means Hours of Smoke and Confused Dogs in D.C. The New York Times
- Fourth of July fireworks impact across USA IQAir