Smoke from wildfires still raging in Canada is degrading air quality across the northern U.S., turning skies a murky orange hue and forcing sensitive groups indoors.
In New York, the smoke could be seen in the upper atmosphere from satellites, and an air quality alert was in effect until 11 p.m. Thursday evening. Poor air quality was also in store for Chicagoans, who were told to reduce time spent outdoors.
