Update, 3:30 p.m.: An air quality alert has been extended once again for Greater Cincinnati, weather service officials said.
The alert will be in place until 11:59 p.m. Friday, July 17. The air will be unhealthy for sensitive groups. The National Weather Service alert recommends everyone avoid prolonged outdoor exposure, especially people with respiratory disease.
Original: Canadian wildfire smoke poses a danger to Midwesterners from Michigan to Northern Ohio, data shows…