For residents of the Pacific Northwest, 2026 was the summer the sky turned orange — and stayed that way. Wildfire smoke became a near-constant presence across Oregon, Washington, and parts of Idaho from late June through September, with air quality reaching hazardous levels repeatedly in cities and rural communities alike.

According to the Oregon Department of Environmental Quality (DEQ), nearly every region of Oregon experienced significant increases in unhealthy air days during the 2026 fire season compared to the previous five-year average. Communities from the Willamette Valley to eastern Oregon spent extended periods under smoke advisories, with the Air Quality Index (AQI) hitting the "Very Unhealthy" and "Hazardous" categories on multiple occasions.

The Human Health Toll

Fine particulate matter (PM2.5) from wildfire smoke is a known health hazard, associated with increased rates of respiratory distress, heart attack, stroke, and premature death — particularly among children, the elderly, pregnant women, and people with pre-existing lung or heart conditions. Oregon and Washington public health departments issued repeated advisories throughout the summer urging vulnerable populations to stay indoors, use air filtration, and avoid strenuous outdoor activity.

Emergency rooms across central and eastern Oregon reported elevated visits for respiratory complaints during periods of heaviest smoke concentration in July and August. Public health officials noted that the cumulative exposure burden this season — not just single-day peaks — represents a significant and underreported health cost of the 2026 fire year.

Cross-Border Smoke Compounds the Problem

The Pacific Northwest's air quality challenges in 2026 were compounded by smoke from Canadian wildfires, which have grown dramatically in scale over the past several years. With more than 830 active fires in Canada as of late October, cross-border smoke plumes have affected communities from the Pacific Northwest to the Great Lakes region, demonstrating that air quality in the Pacific Northwest is increasingly influenced by fire conditions hundreds of miles away.

Wildland-Urban Interface: Evacuation Air

For communities under evacuation orders — particularly around the Warm Springs Reservation, the Spokane area, and communities in the Rogue Valley — smoke was not just an annoyance but a hazard that complicated evacuations, reduced visibility for aerial firefighting assets, and degraded communication and logistics during the most critical operational periods.

What's Changing

Oregon and Washington are both grappling with how to better prepare communities for a future where smoke seasons are longer and more intense. Key areas of focus include:

  • Expanding the network of clean air centers — public buildings with HEPA filtration where residents can shelter during smoke events
  • Distributing high-quality N95 and KN95 masks to vulnerable populations before fire season begins
  • Improving air quality monitoring in rural and tribal communities that currently lack real-time AQI data
  • Integrating smoke forecasting more directly into local emergency management planning

The AirNow.gov fire and smoke map remains the most accessible real-time resource for residents monitoring local air quality conditions. As fall rains have cleared most of the season's smoke, the Pacific Northwest is breathing easier — for now. But with 2027's fire season already on the horizon, the public health community is urging governments at every level to treat smoke preparedness as a year-round priority, not a summer afterthought.