D.C. air quality drops to "very unhealthy" levels after July 4th fireworks
A "purple" air quality alert was issued for Washington, D.C., and surrounding areas, meaning pollution reached levels considered "very unhealthy."
People in and around Washington, D.C., are experiencing a substantial dip in air quality on Sunday, with officials warning that any amount of exposure to the outdoors could potentially come with health consequences. Researchers connected the shift in pollution levels to massive fireworks displays held to celebrate July 4th on Saturday night.
A "purple" air quality alert was issued for the nation's capital and parts of northern Virginia by the Metropolitan Washington Council of Governments, a nonprofit organization that brings together local leaders in the region.
That distinction corresponds with "very unhealthy" air, accompanying warnings against all outdoor physical activity for people in sensitive groups and prolonged outdoor physical activity for everyone else. Sensitive groups include people with heart or lung diseases, older adults, pregnant people, children and teenagers, outdoor workers, and others who may suffer undue health impacts from the currently harsh environment.
Suburban areas around D.C. received an "orange" air quality alert Sunday, meaning conditions are unhealthy for sensitive groups, who are advised to "make outdoor activities shorter and less intense," according to a breakdown of the alert index. Air quality is better farther from the city, with parts of Maryland assigned "yellow" alerts for Sunday, meaning pollution is "moderate" and may only be consequential for unusually sensitive people.
Air quality is expected to steadily improve in the capital and surrounding region over the next few days.
Washington, D.C., was ranked sixth among the world's most polluted cities on Sunday, according to IQAir , a Swiss air quality technology company that monitors global pollution levels. Its position trailed Pakistan's Lahore and Congo's Kinshasa in first and second place, respectively, followed Jakarta, Jerusalem, and Tel Aviv, in that order.