PENDLETON — Stagnant and increasingly unhealthy air is expected to linger over northeast and north central Oregon through the weekend, trapping pollutants at ground level where they can aggravate certain health problems.

The Oregon Department of Environmental Quality has issued an air stagnation advisory for the Lower Columbia Basin, including Pendleton, Hermiston, the foothills of the Blue Mountains and Columbia River Gorge east of The Dalles.

The advisory, based on the latest information from the National Weather Service, will remain in effect through Monday afternoon.

Health officials recommend young children, pregnant women, the elderly or those with asthma, heart or lung conditions limit vigorous outdoor activities. DEQ asks people in the affected areas to avoid open burning and limit use of woodstoves.

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