Late in the day Sunday, smoke from western U.S. fires had drifted over northern IL and northwest IN and this will continue through today. This is expected to remain aloft so no impacts are forecast, but the sky will have a milky white or even gray appearance to it. #ILwx #INwx pic.twitter.com/SVtxnE0NCB

— NWS Chicago (@NWSChicago) September 14, 2020