National Weather Service United States Department of Commerce

An extremely warm and humid air mass takes hold Monday and likely lasts throughout the entire week. Peak heat indices of 95F to 100F are possible each afternoon. The anticipated level of long-duration extreme heat with little to no overnight relief (lows above 70F) will affect individuals without effective cooling and/or adequate hydration.
When Heat Advisory conditions accumulate into multi-day events with limited nighttime relief, Excessive Heat Warning impacts can arise. Practice Heat Safety wherever you are. Know the difference between heat exhaustion and heat stroke.
The Michigan Department of Environment, Great Lakes, and Energy has extended the Air Quality Advisory through Monday due to elevated ozone levels.