Oregon Valleys Under Air Stagnation Advisory Through Sunday Morning

Overview

• The National Weather Service advisory covers the Willamette Valley, the Portland–Vancouver metro and other valley lowlands in Oregon and southwest Washington until 10 a.m. Sunday.
• Roughly three million people are affected across the covered areas, according to estimates cited in Newsweek’s reporting.
• EPA AirNow data show parts of Oregon reaching levels from unhealthy for sensitive groups to unhealthy, while Portland readings Saturday morning were below those thresholds.
• Oregon DEQ issued a separate Air Quality Advisory for southern Deschutes County through 10 a.m. Monday, including La Pine but excluding Bend, Redmond and Sisters.
• Agencies urge residents to avoid outdoor burning, limit use of wood-burning devices, monitor local air-quality maps and reduce outdoor activity if at higher risk.