New York City was under a Code Red heat emergency Wednesday as smoke from Canadian wildfires reduced air quality across parts of the region. CBS News New York's Scott Padgett and Naveen Dhaliwal report.

Smoke from Canadian wildfires is moving into Michigan, creating air quality concerns for people who spend long hours outside.

Health officials urge people with asthma, heart or lung disease, older adults, children, and anyone sensitive to poor air quality to limit prolonged outdoor activity today and tomorrow.