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Michigan Department of Natural Resources
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Wildfire Smoke Disrupts Wisconsin AirVenture Events
2 clusters · 13 sources · last updated
Latest: Canadian Wildfire Smoke Blankets US Midwest, Sparks Health Alerts and Trade Tensions
Mid‑July 2026 saw dense smoke from Canadian wildfires and Minnesota’s Boundary Waters blanket Wisconsin, dropping visibility to under two miles. The EAA AirVenture Cup race in Wausau was postponed on July 18, and a week