The wildfires have caused significant environmental and public health concerns. Over 1.6 million acres have been burned, with 45 active large fires still raging, 31 of which are in Oregon. The Big Grass Fire alone has forced mandatory evacuations in Idaho, threatening over 350 homes. Smoke from the fires has spread across the U.S., impacting air quality in states as far as North Dakota. The National Interagency Fire Center has raised the wildfire preparedness level to the highest tier, indicating severe strain on resources and personnel.