O ver 1,000 firefighters continue to battle a wildfire in California that has over 72,000 acres, prompted evacuation orders and caused three injuries, according to officials.

Smoke from Canadian wildfires is causing air quality concerns for millions of Americans in the Midwest and Northeast.

PM2.5 — is expected to push the Air Quality Index over 100, reaching levels unhealthy for sensitive groups, including children, older adults, and people with heart or lung conditions.