The air quality map for Washington state is turning red and purple this week — and the numbers behind those colors are alarming. The Spokane Complex Fire alone burned more than 8,000 acres, destroyed at least 700 structures, and forced roughly 65,000 residents to evacuate before smoke from dozens of additional Pacific Northwest fires pushed Portland’s AQI to 160 on the morning of August 5, briefly making it the most polluted major city in the world according to IQAir. Washington Governor Bob Ferguson declared a statewide wildfire emergency on August 1 and is now requesting a federal disaster declaration for six counties.
What the Air Quality Map Is Showing — and Where to Check It
The official source for real-time AQI data in Washington is AirNow.gov (airnow.gov), a partnership between the EPA, NOAA, NASA, NPS, and CDC that updates its Fire and Smoke map hourly. The Washington State Department of Ecology also runs a live monitor map at ecology.wa.gov with a dedicated smoke blog — this is the tool the state itself uses when issuing alerts. Both sites apply the same regulatory standard, which matters because low-cost sensors like PurpleAir can significantly overestimate PM2.5 during heavy smoke events; the EPA recommends applying its conversion formula within PurpleAir’s own interface before comparing those readings to official AQI values.
As of August 5, the Department of Ecology expanded its air quality alert to seven western Washington counties — King, Kitsap, Pierce, Snohomish, Thurston, Mason, and Grays Harbor — through at least 5 p.m. on Thursday, August 6. Early morning readings showed unhealthy conditions from Bellingham south through Tacoma and Olympia. The mechanism driving this is a West Coast Thermal Trough channeling smoke westward through the Columbia River Gorge, holding it close to the ground under high pressure and temperatures approaching 90–95°F. That stagnant air is why Portland’s AQI spiked to 160 rather than the smoke simply passing through. Meteorologists expect onshore Pacific flow to return by late Thursday into Friday, which is the primary driver needed to clear the smoke — not the containment of any single fire, since fires hundreds of miles away are contributing to the plume via regional wind patterns. how wildfire smoke travels across state lines
One important read on the AQI scale: the ‘Unhealthy for Sensitive Groups’ category (AQI 101–150) is widely misread as a green light for healthy adults. Once AQI climbs above 150 — which it did in multiple Washington and Oregon monitoring stations on August 5 — health effects extend to the general population, not just people with asthma or heart conditions. And if you are reaching for a cloth mask, it will not protect you; only a properly fitted N95 or P100 respirator filters the fine particulate matter (PM2.5) that makes wildfire smoke dangerous.
The Scale of the Disaster Behind the Smoke
The searches for air quality maps do not happen in a vacuum. They are driven by a crisis that Governor Ferguson described as likely ‘the worst natural disaster in Spokane’s history.’ The three fires collectively known as the Spokane Complex burned 8,026 acres and destroyed at least 700 structures as of August 3. On August 3, Aaron Farinacci, 37, was arrested by the Spokane County Sheriff’s Office and charged with first-degree arson in connection with the Old Trails Fire, the most destructive of the three blazes. The causes of the other two fires in the complex remain under investigation — attributing arson to all three would be inaccurate.
Across the wider region, roughly 50 large, uncontained wildfires are burning as of August 5, with about 30 in central and eastern Oregon alone. The Little Giant Fire west of Chelan burned more than 38,500 acres at zero percent containment as of August 2, per NASA Terra satellite imagery. The Grasshopper Fire near Mount Hood, at roughly 34,000 acres, is the closest significant smoke source for the Portland-Vancouver metro. Oregon has now surpassed 2 million acres burned in a single year for the first time on record — approximately 2,014,481 total acres across the Pacific Northwest. Washington’s legislature had already appropriated $120 million for firefighting in 2026, twice the previous year’s budget, following a drought emergency declared in April and a fire season that began as early as May 7 with the Libby Creek Fire. It has not been enough.
- the 2026 Washington wildfire season timeline
