Residents of Washington, DC, on Sunday briefly skilled the worst air quality of any main metropolis on the planet, in response to an organization that ranks air pollution globally, because the capital reckoned with the aftermath of a massive, 40-minute Fourth of July fireworks present.

City officers issued a Code Red Air Quality Alert, asking residents to restrict time outdoors, with a warning that the air is “unhealthy for seniors, kids, people with medical conditions” and that most of the people could expertise well being points.

DC slipped all the way down to No. 26 on the air quality monitoring platform, IQAir, by 5:30 p.m. ET Sunday.

The fireworks present, organized by Freedom 250, a Trump-backed nonprofit tasked with placing on a collection of semiquincentennial occasions, got here as DC — and the Northeast extra broadly — suffered beneath an excessive warmth wave. The district noticed a triple-digit excessive temperature on Saturday, which primed the ambiance for thunderstorms that noticed the National Mall evacuated earlier than the fireworks present.

Dr. Kisha Davis, chief well being officer of close by Montgomery County, Maryland, advised NCS earlier than the fireworks present Saturday that, “The air quality today is like running a marathon while smoking a cigarette,” including that the 850,000-firework display across the National Mall would make issues worse.

But as forecasts showed an opportunity for thunderstorms Sunday night, Davis stated the rain might assist cleanse the air. “It does push all of those, you know, chemicals and pollutants into the water system, but they are at least out of the air,” Davis advised NCS Sunday.

Visitors arrive for the Great American State Fair on the National Mall during a celebration of America's 250th Independence Day on July 4, in Washington, DC.
Fireworks light the sky over Washington, DC, just after midnight on July 5, 2026.

The present was anticipated to set a Guinness World Record, as lots of of 1000’s of fireworks shells have been launched from 10 websites spanning the Lincoln Memorial Reflecting Pool, Potomac River barges and West Potomac Park. The benchmark was 810,904 fireworks at a 2016 New Year’s Eve countdown celebration within the Philippines. The capital’s spectacle was about 10 instances greater than Macy’s Fourth of July Fireworks Show in New York, which is often the nation’s largest Independence Day bash.

There was no public affirmation as of Sunday that the display had been licensed as a brand new world document. NCS has reached out to Guinness World Records.

Internal National Park Service paperwork obtained by The Washington Post confirmed the fireworks present was anticipated to trigger “very unhealthy” situations in central DC. The paperwork advised that folks ought to restrict publicity to the air pollution and really helpful that these watching the fireworks open air put on N95 masks.

The park service didn’t present a remark concerning the inner paperwork when reached by NCS.

The DC Fire and EMS Department reported 96 affected person contacts and 40 affected person transports from the National Mall between midnight Friday and 9 a.m. Sunday, in response to the National Special Security Event Joint Information Center, a multiagency hub that oversees safety for occasions celebrating the nation’s 250th anniversary in Washington, DC. It’s unclear what number of of these incidents have been associated to warmth or air quality.

Police sirens and ambulances approach George Washington University Hospital upon the conclusion of the fireworks display in Washington, DC, early in the morning on July 5, 2026.

George Washington University additionally reported 289 affected person contacts from the National Mall as of 10 p.m. Saturday. The heart additionally reported that the Department of Health and Human Services reported 314 affected person contacts.

President Donald Trump, whose 40-minute late-night tackle preceded the fireworks present, wrote on social media the display was “the Most Spectacular Fireworks Show I have ever seen, and I’ve seen them all. Congratulations on a job well done!”

NCS’s Kaanita Iyer and Aleena Fayaz contributed to this report.



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