* WHAT. Peak heat index values of around 100 degrees expected, especially on Saturday afternoon. Values will be a bit cooler but still in the 90s today. * WHERE. Portions of north central, northeast, and northwest Ohio and northwest Pennsylvania. * WHEN. Until 8 PM EDT Saturday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses. The prolonged nature of the heat may increase heat stress with time.

The Michigan Department of Environment, Great Lakes, and Energy has declared an Air Quality Advisory for Friday, June 21st for elevated levels of ozone. Pollutants are expected to be in the Unhealthy for Sensitive Groups range. The advisory is in effect for the following Michigan counties. St. Clair. Livingston. Oakland. Macomb. Washtenaw. Wayne and Monroe. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with respiratory diseases such as asthma. People and businesses are urged to avoid activities which can lead to ozone formation. These activities include: refueling vehicles or topping off when refueling, using gasoline powered lawn equipment, using charcoal lighter fluid. Positive activities include: driving less, telecommuting, walking or bike riding, delaying or combining errands, using water-based paints. For further information, please see EPAs Air Now site for up-to-date air quality data: https://www.airnow.gov/