A series of wildfires across the Pacific Northwest, particularly in Oregon and Washington, have prompted road closures, evacuations, and significant firefighting efforts. The Pacific Crest Trail, Highway 20, and various campgrounds are threatened, with the region in 'Preparedness Level 5,' indicating high priority for firefighting resources. In Yakima County, the Retreat Fire has forced Level 3 evacuations and closed US 12, while the Durkee Fire has led to Interstate 84 closures and further evacuations in Baker and Malheur Counties. The fires, exacerbated by human-caused climate change, have resulted in hazardous air quality in areas like the Tri-Cities due to smoke from multiple fires. ODOT has advised travelers to plan their routes carefully and avoid relying on I-84, which remains closed due to fast-moving wildfires.