Code Purple Air Quality Alert — July 17, 2026
Wildfire smoke has triggered a statewide Code Purple action day; everyone should limit outdoor activity and protect indoor air.
The Pennsylvania DEP upgraded the prior Code Orange to a statewide Code Purple Air Quality Action Day for fine particulate matter (PM2.5) on Friday, July 17, 2026, due to wildfire smoke drifting from Ontario and Minnesota. Officials say air is 'very unhealthy' for everyone, recommend limiting outdoor activity, keeping pets indoors, using indoor recirculation or high-efficiency filters if possible, and seeking emergency care for severe breathing symptoms; air quality should improve Saturday but may remain unhealthy for sensitive groups.