Wildfire Smoke Affects 100 Million Americans

Why it matters locally: Portions of Pennsylvania, particularly the eastern half, have experienced significant air quality degradation due to wildfire smoke, leading to health advisories issued by state environmental agencies.

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Smoke from Canadian wildfires now impacts approximately 100 million Americans. This smoke has expanded its reach, affecting additional cities across the United States. Tom Costello, an NBC News correspondent, provided the latest information regarding the smoke's movement and its impact on these new U.S. locations.