As wildfire activity surges across the Pacific Northwest and intermountain West, smoke from multiple fires is affecting air quality across a broad swath of the region, with residents from the Rogue Valley in southern Oregon to Spokane and the Palouse in Washington facing periods of unhealthy air. Meteorologists warn that the combination of ongoing fire activity and stagnant air patterns in some valleys could push air quality into hazardous ranges in the days ahead.

Northeastern Oregon and Whitman National Forest Smoke

Fires burning in and near the Whitman National Forest in northeastern Oregon — including the Olive Butte Fire in Grant County — have produced visible smoke plumes tracked by federal monitoring services. Light-density smoke from those incidents has been observed drifting north and west into southern Washington's Palouse region and western Idaho's agricultural lowlands. The US Fire Weather program noted the smoke transport on Sunday, with airborne fine particulate matter (PM2.5) reaching elevated levels in downwind communities.

Rogue Valley Under Smoke Stress

Southern Oregon's Rogue Valley — which sits in a natural bowl surrounded by mountains — is particularly vulnerable to smoke accumulation. The East Evans Creek Road Fire burning north of Medford near Sams Valley has contributed directly to elevated PM2.5 readings in the valley since Friday. Residents with respiratory conditions including asthma, COPD, and heart disease are advised to limit outdoor activity, especially during afternoon hours when smoke tends to concentrate in valley airsheds.

Central Oregon Fire Information, a clearinghouse for fire and air quality information serving Deschutes and Crook counties, has been tracking contributions from multiple fires including those on the Ochoco National Forest.

Statewide and Regional Picture

A thin band of moderate-density smoke was observed Monday extending from the Pacific coast into northwestern Washington and Oregon, with broader haze from multiple Rocky Mountain fires affecting much of the Columbia Basin. Washington State's Department of Ecology is monitoring air quality statewide through its network of AQI sensors and has activated smoke response protocols for multiple air basins.

The National Weather Service forecast office for Portland noted that southerly wind shifts through the week could draw additional smoke from California and Nevada fires northward into the Willamette Valley.

Protecting Yourself from Wildfire Smoke

  • Check AirNow.gov for real-time AQI in your zip code before going outdoors.
  • Limit outdoor exercise when AQI exceeds 100 (Unhealthy for Sensitive Groups).
  • Use N95 or KN95 masks if you must be outside when AQI is in the Unhealthy (151+) range. Cloth masks and surgical masks offer little protection from fine smoke particles.
  • Keep windows and doors closed and run HVAC systems on recirculate mode.
  • Use portable air purifiers with HEPA filters indoors if available.
  • Never burn wood or garbage during smoke events — it adds to the problem.

Sensitive populations — including children, the elderly, pregnant women, and those with pre-existing respiratory or cardiovascular conditions — should take extra precautions and consider relocating temporarily if air quality remains in the unhealthy range for extended periods.