One week into sweeps, WLS has opened up a surprising 2.2 point lead in total viewers at 10 (8.4 to 6.2). ABC 7 and NBC 5 both improved on their lead-ins (5.8 and 5.0, respectively). Of course, it is only based on 5-7 nights of competition (I don't know if Saturday and Sunday nights count, where the two leaders don't compete head-to-head, anyway), but considering they only had a 1 point lead and were down a fraction in the demo last month, the folks at 190 North must be confident. No word on the demo numbers, but I'd imagine that, with this recent boost, they've at least tied WMAQ. WBBM was also "up" about a point this first week, notching a 3.2. WGN, meanwhile, has essentially remained steady at a very disappointing 2.6. "Channel 9's poor showing suggests its star weatherman Tom Skilling [...] doesn't automatically ensure strong ratings results."
http://www.bizjournals.com/chicago/news/2015/11/06/wls-channel-7-evening-news-pulling-ahead-as.html?ana=twt