With wildfire activity already beginning to stir across the Pacific Northwest and a potentially dangerous fire season ahead, air quality and public health officials are urging residents to prepare for periods of hazardous smoke exposure that may come earlier and last longer than in previous years.

Smoke Concerns Extend Far Beyond Fire Lines

AccuWeather meteorologists emphasize that one of the most significant and often underappreciated impacts of major wildfire seasons is the reach of wildfire smoke. Smoke from large fires can degrade air quality hundreds of miles from the fire itself, affecting communities that may never see flames or even know a fire is burning nearby.

During significant fire seasons in recent years, smoke from Eastern Oregon, Eastern Washington, and Idaho fires has regularly blanketed the Willamette Valley, the Puget Sound region, and urban areas including Portland, Salem, Eugene, and Seattle — cities and towns well outside the primary fire zones. In the worst events, Air Quality Index (AQI) readings in the Hazardous category have forced school closures, canceled outdoor events, and sent vulnerable populations to emergency rooms.

2026 Season Outlook Concerning

The 2026 season forecast raises particular concern for air quality. Record-low snowpack means rivers will run low and valley areas may see more stagnant air patterns as summer progresses. Atmospheric inversions — weather conditions that trap smoke near the surface — tend to be most severe during exactly the hot, dry conditions that also produce the largest fires.

Oregon's Department of Environmental Quality (DEQ) and Washington's Department of Ecology both operate air quality monitoring networks and issue air quality advisories when smoke levels rise to unhealthy thresholds. Residents are encouraged to bookmark these resources and check them frequently during fire season.

Protecting Yourself from Smoke

Public health officials recommend the following steps to reduce smoke exposure during air quality events:

  • Stay indoors when air quality reaches Unhealthy levels (AQI above 150). Close windows and doors.
  • Use a portable air purifier with a HEPA filter in your home if possible, especially in a bedroom or primary living space.
  • Wear an N95 or KN95 respirator if you must go outside during smoke events — cloth masks and surgical masks provide little protection against smoke particles.
  • Avoid strenuous outdoor activity during smoke events, particularly for children, the elderly, and those with heart or lung conditions.
  • Monitor air quality at airnow.gov, Oregon DEQ's AQI map, or Washington Ecology's air monitoring portal.
  • Identify clean air spaces in your community — many counties open cooling and clean-air centers during smoke emergencies.

Vulnerable Populations at Greatest Risk

Children, older adults, pregnant women, and anyone with pre-existing respiratory or cardiovascular conditions face the greatest health risks from wildfire smoke. Even short-term exposure to fine particulate matter (PM2.5) — the primary health hazard in wildfire smoke — can trigger asthma attacks, heart events, and other serious health consequences in vulnerable individuals.

With the season forecast suggesting an active summer, building your smoke preparedness plan now — before conditions deteriorate — is one of the most important steps Pacific Northwest residents can take.