After weeks of smoke-choked skies across the Pacific Northwest, air quality is improving significantly for the Labor Day holiday weekend as cooler temperatures and showers push wildfire smoke out of the region. Oregon Smoke Information (oregonsmoke.org) reports that smoke advisories that were in place for much of the state have ended, providing relief to residents and outdoor enthusiasts just in time for the holiday.

Oregon Smoke Advisory Status

A multi-county smoke advisory that had been in effect across much of Oregon ended on Wednesday, September 2, 2026, in the afternoon for most affected counties. Deschutes County was transitioning to an intermittent smoke advisory as of September 2, with conditions expected to fluctuate based on local fire activity and wind patterns near Bend and surrounding communities.

Portland's air quality is currently rated as Good, according to IQAir monitoring data — a significant improvement from the Unhealthy and Very Unhealthy readings that plagued the city during peak fire season. Central and eastern Oregon communities, which bore the brunt of smoke from the Rowe Creek Complex and other large fires, are also seeing improved conditions.

Washington and Idaho

Light smoke density was observed from Washington, Oregon, Idaho, and Montana wildfires in recent satellite imagery, with cloud cover and precipitation further limiting smoke transport and concentrations. Communities near active fires in Okanogan, Chelan, and Boise counties should still exercise caution, as localized smoke can remain elevated near fire perimeters even when broader regional air quality improves.

IQAir data indicates AQI readings across much of the Northwest have dropped into the Good to Moderate range as of September 4, though conditions may shift with changing winds.

Protecting Yourself from Wildfire Smoke

Even with improving conditions, Oregon and Washington health agencies advise residents to take precautions when smoke is present:

  • Check airnow.gov or your local air quality agency before outdoor activity
  • Use N95 or P100 respirators if you must be outdoors in smoky conditions — cloth masks do not filter wildfire smoke particles
  • Keep windows and doors closed when outdoor air quality is unhealthy; use recirculated air in vehicles
  • Air purifiers with HEPA filters are effective at reducing indoor smoke concentrations
  • Sensitive groups — including children, elderly, and those with heart or lung conditions — should limit outdoor activity even at Moderate AQI levels

Looking at the Season

The 2026 fire season generated some of the worst air quality events on record across the Pacific Northwest. During peak smoke events in July and August, AQI readings in parts of eastern Oregon, central Washington, and the Boise area reached Hazardous levels, prompting public health advisories and cancellation of outdoor events.

Oregon Smoke Information (oregonsmoke.org) and AirNow (airnow.gov) remain the best real-time resources for monitoring air quality across the Pacific Northwest. Both sites are updated regularly with sensor data and forecast information.