Choking air from Western fires just won't ease up

Relief from putrid, dangerous air spewing from massive wildfires across the West won't come until later in the week or beyond, scientists and forecasters say, and the hazy and gunk-filled skies might stick around for even longer. People in Oregon, Washington and parts of California were struggling under acrid yellowish-green smog — the worst, most unhealthy air on the planet according to some measurements. It seeped into homes and businesses, sneaked into cars through air conditioning vents and caused the closure of iconic locations such as Powell’s Books and the Oregon Zoo in Portland, the state's biggest city.