The Washington Post has reported that the massive fireworks display planned for President Donald Trump's July Fourth celebration on the National Mall is expected to generate hazardous air pollution, according to internal National Park Service documents. The show, scheduled for Saturday night as part of the 250th anniversary of American independence, is projected to produce fine particulate matter levels that could pose serious health risks to attendees and nearby residents.
The internal modeling reviewed by the Post indicates that in the most likely scenario, the fireworks will generate between 600 and 1,200 micrograms of PM2.5 per cubic meter around the Mall. A worst-case scenario could exceed 2,000 micrograms per cubic meter, according to the report. PM2.5 refers to fine inhalable particles that are 2.5 micrometers or smaller, which the Environmental Protection Agency says can penetrate deep into the lungs and may enter the bloodstream, posing the greatest health risk among particulate matter categories.
George Thurston, a professor of medicine and population health at New York University, told the Post that people attending or living near the display should reduce their exposure to the smoke. “People should use the precautionary principle, which is to minimize exposures,” Thurston said. “An N95 mask would be a good idea.” The draft analysis also advised that people near the Mall should “avoid prolonged exposure.”
The fireworks show is part of the Salute of America 250 Celebration & Fireworks, which the official Freedom 250 event page says will feature 850,000 shells launched from 10 sites, including the Lincoln Memorial Reflecting Pool, eight Potomac River barges and West Potomac Park. Organizers list the fireworks show as starting at 10:30 p.m. and lasting about 40 minutes. The White House promoted the event as a centerpiece of the nation's anniversary celebration, saying more than a million people will gather on the National Mall for Trump's keynote remarks, entertainment and “the largest pyrotechnics display in the history of the world.”
The Post reported that downtown Washington, Arlington and Capitol Hill were projected to see “very unhealthy” conditions, with elevated pollution levels lingering for three to six hours after the fireworks show. Another Park Service document recommended N95 masks outdoors and staying inside as much as possible during and after the display, according to the report.
The documents also raised questions about who could be affected by the smoke. The fireworks are planned near the Potomac River and the National Mall, not far from Southeast Washington, an area that includes predominantly Black and lower-income neighborhoods, The Post reported. Thurston told The Post that respiratory and cardiovascular problems, including asthma, are more prevalent among lower-income and minority populations. “I definitely think that should not be ignored,” he said.
D.C. officials have separately warned residents and visitors to prepare for a large holiday crowd and several days of extreme heat. Mayor Muriel Bowser's office said Monday that hundreds of thousands of residents and visitors are expected for events, including the Salute to America Celebration and Fireworks, parades, World Cup celebrations and Washington Nationals games. The mayor’s office said the National Mall event has been designated a National Special Security Event and advised attendees to arrive early, use public transportation and expect security magnetometers to open at 1 p.m. Saturday.
Fox News Digital reached out to the White House for comment but did not immediately receive a response. The combination of hazardous air pollution from the fireworks and the extreme heat wave gripping the region has prompted health experts to urge caution for the millions expected to attend the nation's largest Independence Day celebration.
