Portland Anticipates Warmer Temperatures and Air Stagnation Advisory

Portland is projected to experience above-average temperatures, sunnier skies, and light winds with minimal precipitation during the upcoming week due to a high-pressure system. Light, scattered showers are possible in southwest Washington and the northern Oregon coast until Monday morning. Following this, weather models indicate a period of six to eight consecutive dry days. Temperatures are expected to be approximately 10 degrees warmer than the seasonal average, with a high of 55 degrees anticipated on Tuesday. A drying trend, combined with light winds and limited air movement, is expected to result in air stagnation in Valley areas. This condition may lead to prolonged periods where pollutants are trapped near the ground, primarily affecting individuals with respiratory conditions. An air stagnation advisory has been extended and is scheduled to expire at 4 a.m. on Friday morning. Sensitive populations are advised to remain indoors, use air purifiers, and keep windows closed if feasible. If outdoor activity is necessary, wearing a face mask is recommended. Consultation with a physician is advised for managing health during periods of elevated air pollution. State air quality agencies have issued a strong advisory against outdoor burning throughout the duration of the advisory.