This article originally appeared on Milwaukee Journal Sentinel: Wisconsin air quality alert extended to noon Aug. 2; wildlife smoke affects AQI forecast Milwaukee's air quality at one point on July 31 was the poorest in the country, and the rest of Wisconsin's wasn't much better.

Duluth, North Shore are in a Very Unhealthy Air Quality Alert, with the rest of Minnesota under a Red AQI. Wisconsin reports very unhealthy conditions on Thursday, July 31.

The Wisconsin Department of Natural Resources is urging residents to limit time outdoors over the next 48 hours due to deteriorating air quality from Canadian wildfire smoke. According to the DNR, widespread unhealthy levels of fine particulate matter (PM2.