Across the Corn Belt, hazy conditions are due to rampant Canadian wildfires.  Any showers are light and limited to the upper Mississippi Valley and Midwest.  As a result, most of the Midwest continues to lose soil moisture due to evaporative losses and crop moisture demands.  Cooler air is overspreading the Great Lakes region, but hot weather persists in much of the western Corn Belt.  On June 4, topsoil moisture was rated more than one-half very short to short in all Midwestern States except Minnesota and North Dakota, led by Michigan (88%), Ohio (76%), and Missouri (75%).

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