Wildfire Smoke Worsens Air Quality Across Pacific Northwest, California, Midwest

Worsening air quality due to wildfire smoke is impacting large regions across the western and central United States, including Eastern Washington, the Tri-Cities area, Fresno County in California, and parts of Nebraska. In Eastern Washington, the National Weather Service has expanded Air Quality Alerts for multiple counties due to thickening smoke from several active wildfires, advising residents—especially sensitive groups—to limit outdoor activity and take precautions to maintain indoor air cleanliness amid rising heat risks. Similarly, the Tri-Cities area experienced air quality in the 'unhealthy' range for sensitive groups, with regional fires such as the Emigrant Fire in Oregon contributing to hazardous conditions, prompting health advisories to reduce exposure and stay hydrated. Fresno County is also suffering from heavy smoke, aggravating respiratory issues for vulnerable individuals, with medical professionals emphasizing the importance of treatments and indoor air purification to mitigate health effects. Additionally, smoke from Canadian wildfires is expected to affect air quality in eastern Nebraska, with officials warning sensitive populations to reduce outdoor exertion as air quality indexes rise to moderate or unhealthy levels. Across all affected areas, officials consistently recommend limiting outdoor activities, avoiding strenuous exercise, and protecting those with heart, lung, or other chronic conditions from smoke exposure and heat-related illnesses.