Canadian Wildfires Impact Air Quality Across Western U.S. States
Smoke from Canadian wildfires is affecting air quality across several U.S. states, including Washington, Oregon, Idaho, Montana, Wyoming, and Colorado. The National Weather Service has issued air quality advisories for cities such as Denver, Spokane, and Boise, warning of unhealthy levels of fine particulate pollution. The smoke, originating from large wildfires in British Columbia, poses health risks, particularly for vulnerable populations such as children, the elderly, and those with pre-existing respiratory conditions. 
