Step outside and you'll probably smell it—smoke has been a major issue across much of Eastern Canada this weekend. Montreal and Toronto made the list for the top-five major global cities with the worst air quality on Sunday. The cities ranked fourth and fifth, respectively, with air quality values in the “unhealthy for sensitive groups” range.

Smoke from wildfires in Canada reached Connecticut’s skies and caused poor air quality on Tuesday, according to state officials monitoring the levels and impact. The flames are burning 2.5 million acres in the area of Alberta,