Washington records world’s worst air quality for a city after over 850,000 Fourth of July fireworks

Washington DC recorded the world's worst air quality for a major city following an Independence Day fireworks display featuring over 850,000 fireworks. Analysis shows particulate matter concentrations rose to 6.7 times pre-fireworks levels, causing residents to breathe unhealthy air for hours. This event took place as the Trump administration rolls back an unprecedented number of pollution controls, although the president described the National Mall fireworks show as spectacular during the holiday celebration.