Following a massive fireworks display to celebrate the 250th anniversary of the United States, Washington D.C. is grappling with hazardous air quality levels, prompting Code Red and Code Purple alerts. Experts warn that the smoke from the fireworks has contributed to very unhealthy pollution levels, impacting not only the environment but also public health. The aftermath of the celebration has raised concerns over the prolonged effects of fireworks on air quality, with reports of worsened conditions affecting various regions across the country. Attendees and residents are advised to take precautions, including wearing masks to protect against the lingering smoke. Overall, the extravagant display has resulted in confusion and health fears among local communities.