Science & EnvironmentOregon is home to 4 of the top 5 smokiest cities nationwide By Jes Burns (OPB)Feb. 20, 2025 2 p.m. Updated: Feb. 21, 2025 4:36 p.m.Northwest researchers find Medford, Grants Pass and Bend had the most wildfire smoke from 2019-2023.📨 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