"The air quality is officially dangerous in Chicago," says Brian Urbaszewski, director of environmental health programs at the Respiratory Health Association. "It's going to send people to the emergency room.

CHICAGO - Today we have an air quality alert in effect with unhealthy levels of smoke in the air. We also have high waves possible through the afternoon in Cook County and NW Indiana. Highs today will be in the mid to upper 70s with hazy sunshine.