The dangerous wildfire smoke drifting from Canada's ongoing wildfires has once again pushed air quality to hazardous levels across parts of Canada and the United States, prompting officials to issue air quality alerts and urge millions of people to limit time outdoors. The smoke, which has traveled hundreds of miles from active fires, contains fine particulate matter that can penetrate deep into the lungs, increasing the risk of breathing problems even in otherwise healthy individuals.
Canada continues to battle an active wildfire season, with dozens of fires burning across several provinces. Strong winds have carried thick smoke far beyond the fire zones, reducing visibility and causing air pollution to reach unhealthy or even hazardous levels in communities hundreds of miles away. Health officials warn that prolonged exposure to wildfire smoke can irritate the respiratory system, worsen existing heart and lung diseases, and increase the risk of serious complications among vulnerable populations.
