An Air Quality Alert has been issued by the National Weather Service. It is in effect from 6 PM this evening to midnight PDT Tuesday night.
Smoke from wildfires in Eastern Washington and Montana will drift westward across Western Washington through Tuesday night. The central Puget Sound Region and the mountains will be the most impacted by the smoke. Expect the air quality to become unhealthy for sensitive groups late tonight through Tuesday evening.
Conditions are expected to begin improving Tuesday night, but even more so on Wednesday, as marine air pushes inland and southerly flow aloft pushes the smoke out of the area.
Children, the elderly, and individuals with respiratory illnesses are most at risk of serious health effects. These groups should limit or avoid time outdoors.