Extreme Air Quality Alert Issued for Philadelphia and Pennsylvania Amid Wildfire Smoke

Philadelphia and the Pennsylvania Department of Environmental Protection have issued a Code Purple Air Quality Alert for Friday, July 17, 2026. This alert signifies very unhealthy air quality due to particulate matter from wildfire smoke originating in Canada and Minnesota, indicating that everyone is likely to experience health effects. Residents are strongly advised to stay indoors and avoid optional outdoor activities to mitigate health risks.