Canadian wildfire smoke tanking air quality in the US
02:49
Canadian wildfire smoke tanking air quality in the US
Three US cities rank in the top 5 for worst air quality in the world as of Thursday morning. Canadian wildfire smoke will continue to be a problem through at least Saturday across the northern U.S.
Latest Videos
02:49
02:50
02:16
03:06
04:01
03:47
03:05
03:33
08:13
03:00