Full Breakdown
Seattle Braces for Unhealthy Air as Spokane Wildfire Smoke Moves In
8/4/2026, 8:41:57 AM
Deteriorating Air Quality in the Puget Sound Region
A plume of smoke from rapidly expanding wildfires near Spokane is expected to descend into Seattle and surrounding counties. Meteorologist Dana Felton of the National Weather Service warned that the current northwesterly flow is keeping particulates aloft, but a shift to a northeasterly wind later Monday will draw the smoke toward the surface. Agency alerts predict that air quality could reach “unhealthy” levels in Seattle, reducing visibility and prompting health cautions.
Wildfire Activity East of the Cascades
Over the weekend, tens of thousands of residents were evacuated from Spokane as three major fires surged around the city’s perimeter. Hundreds of structures have been lost, and roughly a dozen additional wildfires east of the Cascades have grown by about 30 % in the past few days. Dry conditions that fuel fire risk are expected to persist across the region.
Agency Alerts and Health Guidance
The Puget Sound and Olympic Region clean-air agencies issued alerts covering King, Kitsap, Pierce, Snohomish and Thurston counties through Wednesday evening. The alerts advise people, especially those with health concerns, to limit outdoor time, avoid strenuous activity, and follow indoor-air-quality recommendations provided by the National Weather Service. Detailed safety information is available on the city’s wildfire-smoke website.
Key Numbers and Forecasts
- Evacuations in Spokane: tens of thousands.
- Structures lost: hundreds.
- Fire growth: about a dozen major fires increased by roughly 30 % recently.
- Temperatures: highs near 85 °F on Tuesday, approaching 90 °F on Wednesday and Thursday, though dense smoke may lower actual temperatures by a few degrees.
- Wind pattern: northeasterly flow expected to persist through Thursday, with a low-level reversal anticipated Thursday night, potentially improving air quality by Friday.
Outlook for the Week
Smoke is projected to settle over Seattle through Thursday, with limited atmospheric mechanisms to disperse it. A shift in wind direction Thursday night could bring modest improvement by Friday, but warming and drying conditions will maintain near-critical fire-weather concerns across the Cascades and Olympic Mountains through the weekend. Residents are urged to stay informed of agency updates and to take protective measures while the smoke lingers.
