Smog warning anticipated Monday morning

Hot weather, dry temperatures keep stagnant air in Willamette Valley

A burn ban is in place as of Dec. 2 in Clark County until air quality improves. This summer 2014 photo shows poor air quality in the Willamette Valley (KOIN 6)
A burn ban is in place as of Dec. 2 in Clark County until air quality improves. This summer 2014 photo shows poor air quality in the Willamette Valley (KOIN 6)

PORTLAND, Ore. (KOIN 6) — If  you noticed a beautiful sunset tonight, it’s not just the cloud cover.

Low-lying smog can have detrimental health effects on children, the elderly and people with asthma, said Department of Environmental Quality air quality manager David Monro.

With the summer heat and light winds, air can become stagnant in the Willamette Valley. As the temperature dips at night, that cooler air sinks into the valley and becomes trapped with smoke from any fires burning,  pollen, car exhaust and other pollutants.

It is anticipated an official warning will be issued Monday.

READ MORE about smog here.

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