
Chicago’s air was “very unhealthy” for a second straight day Wednesday because of smoke from Canadian forest fires.
People — particularly the young, old and medically fragile — were urged to take precautions to protect themselves.

Chicago’s air was “very unhealthy” for a second straight day Wednesday because of smoke from Canadian forest fires.
People — particularly the young, old and medically fragile — were urged to take precautions to protect themselves.