From AlertDC:
“A Code Purple Air Quality Alert has been issued for DC:
WHEN: Friday, July 17
IMPACTS: The current outdoor air quality is unhealthy. Risk of health issues are increased for all people. Older adults, children, and people with heart or lung diseases may experience more serious health problems.
PREPAREDNESS ACTIONS:
STAY inside and CLOSE windows during periods of extremely poor air quality.
CHECK www.airnow.gov and airquality-doee.dc.gov for air quality updates.”