| Start Date/Time: | Friday, May 19 – 12:00 am CDT |
| End Date/Time: | Saturday, May 20 – 12:00 am CDT |
| Counties: | Brown, Calumet, Columbia, Crawford, Dane, Dodge, Door, Fond du Lac, Grant, Green, Green Lake, Iowa, Jefferson, Kenosha, Kewaunee, Lafayette, Manitowoc, Marquette, Milwaukee, Outagamie, Ozaukee, Racine, Richland, Rock, Sauk, Sheboygan, Walworth, Washington, Waukesha, & Winnebago |
| Comments: | Wildfire smoke originating from Canada will move into southern and eastern Wisconsin from northwest-to-southeast beginning around midnight tonight. PM2.5 concentrations will likely increase sharply at times before steadily diminishing as cleaner air moves in. The air quality index is expected to reach the UNHEALTHY FOR SENSITIVE GROUPS level. Areas further west will have the potential to reach the UNHEALTHY air quality index level, while areas further northeast will have the potential to see lesser impacts within the MODERATE air quality index level. People with heart or lung disease, older adults, and children should reduce prolonged or heavy exertion. |
