Algae Outbreaks and Mosquito Concerns Amid Summer Weather in Wisconsin
Algae Outbreaks and Mosquito Concerns Amid Summer Weather in Wisconsin
US · Published Sep 10, 2026
Recent summer weather in Wisconsin has led to algae outbreaks, causing closures at popular water recreation spots.
Additionally, the State Department of Health Services has issued a warning about Eastern Equine Encephalitis (EEE) after a horse in Portage County tested positive for the virus.

Impact & Risks

The algae outbreaks have disrupted recreational activities, impacting local tourism and water-based businesses. The EEE warning highlights the risk of mosquito-borne illnesses, particularly for individuals spending time outdoors. Residents in Marathon and Portage counties should remain vigilant about mosquito exposure and water quality concerns. The forecasted showers may bring minor disruptions to outdoor plans.

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