Science & EnvironmentIncoming rain could improve air quality in OregonBy Meerah Powell (OPB)Sept. 17, 2020 6:39 p.m. Updated: Sept. 17, 2020 10:09 p.m.Rain should help to douse fires and improve air quality in Oregon, but could also bring flooding, landslides and debris flows.📨 Daily news in your inboxSign up today for OPB’s “First Look” – your daily guide to the most important news and culture stories from around the Northwest.EmailPlease leave this field blankSign up