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Wildfire Smoke Sparks Air Quality Advisory Across Oregon

The advisory covers much of Oregon and urges residents most at risk to stay indoors as smoke and heat may worsen air conditions.

  • The Oregon Department of Environmental Quality issued an air quality advisory for nearly the entire state on Monday, Aug. 3, 2026, as smoke from multiple wildfires burning in Oregon and Washington blanketed the region.
  • Roughly 2 million acres have burned across the Pacific Northwest this season, with smoke from the Grasshopper Fire in Mount Hood National Forest among the major contributors to the advisory.
  • As of Tuesday, air quality was measuring "hazardous" in Prineville and "unhealthy" in eastern Oregon, with fine particulate matter less than 2.5 microns posing significant health risks to vulnerable populations.
  • Multnomah County Health Department officials imposed mandatory wood-burning restrictions effective Monday at noon and advised residents to stay indoors, keep windows closed, and use HEPA filters.
  • Meteorologists expect onshore flow to strengthen late Thursday and into Friday, a shift predicted to bring cooling and clear the smoke lingering across the region.
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KPTV broke the news in Portland, United States on Monday, August 3, 2026.
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