Wildfire Smoke Affects 100 Million Americans

Why it matters locally: While most of Tennessee currently shows good air quality, changing weather patterns mean poor air quality could still impact parts of the state in the coming days.

---

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.