Washington briefly ranks as the world’s most polluted major city after a large Independence Day fireworks show, according to IQAir data cited by multiple outlets. The fireworks are promoted by the Trump administration and are associated with the Freedom 250 effort. Inquirer.net reports that the fireworks company Pyrotecnico, hired by Freedom 250, targets a world record by firing about 850,000 fireworks within roughly 40 minutes, after some experts warned that the volume and timing could create serious health risks. Inquirer.net and other coverage link the event to conditions on July 4, which occurs during a record-breaking heat wave. NDTV and RTE News note that the heat wave disrupts typical July 4 activities, including parades, block parties and barbecues. The combined reporting indicates that the combination of dense fireworks emissions and extreme weather coincides with a temporary spike in pollution levels measured by IQAir. While outlets differ in emphasis on the record-setting plan and health concerns, all describe the same outcome: a brief period of peak pollution in Washington tied to the Independence Day fireworks display.