Canada Wildfires 2026: How people in US & Canada can protect themselves from toxic smoke that could put their lungs, heart and brain at serious risk; what studies say

Canada wildfires 2026 smoke drifts across North America, triggering air quality alerts and health concerns. Thousands of campers were evacuated from remote areas after lightning-sparked fires spread rapidly. Wildfire smoke contains harmful particles and gases affecting lungs and hearts, especially for vulnerable groups. Health experts warn that extreme heat combined with poor air quality increases health risks. Reducing exposure to smoke remains the most effective way to minimize health risks.