* WHAT. Dangerously hot conditions with heat index values up to 100 possible. * WHERE. Portions of east central and southeast Indiana and central, south central, southwest, and west central Ohio. * WHEN. From Monday afternoon through Friday evening. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events, particularly for those working or participating in outdoor activities.

* WHAT. A prolonged period of dangerously hot conditions with heat index values near 100 degrees. * WHERE. Portions of east central and southeast Indiana and central, south central, southwest, and west central Ohio. * WHEN. From noon today to 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values of 95 to 101 expected today. * WHERE. Starke, Pulaski, Fulton IN, White, Cass IN, Miami, Northern La Porte and Southern La Porte Counties. * WHEN. From 11 AM EDT /10 AM CDT/ this morning to 8 PM EDT /7 PM CDT/ this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses to occur. * ADDITIONAL DETAILS. Heat stress increases with the number of consecutive hot days. Heat indices will range from 94 to near 100 for the next five days, with high temperatures in the upper 80s and low to mid 90s. Low temperatures in the 70s at night will provide little relief from the heat. Monitor for additional heat headlines this week.

An extended period of hot and humid conditions is expected across all of Central Indiana through next weekend. Daily high temperatures in the low to mid 90s with heat indices approaching 100 during the afternoon hours may be hazardous for sensitive and vulnerable populations. Take extra precautions if spending time outside during peak heating of the day.

* WHAT. Heat index values of 95 to 100 degrees expected. * WHERE. Portions of northern Indiana and southwest Michigan. * WHEN. From 11 AM this morning to 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses to occur. * ADDITIONAL DETAILS. Heat stress increases with the number of consecutive hot days. Heat indices will range from 93 to near 100 for the next five days, with high temperatures in the upper 80s and low to mid 90s. Low temperatures in the 70s at night will provide little relief from the heat. Monitor for additional heat headlines this week.

* WHAT. Dangerously hot conditions with heat index values between 95 and 105 expected throughout the week. Low temperatures in the 70s at night will provide little relief from the heat. * WHERE. Portions of northern Indiana and northwest Ohio. * WHEN. From 11 AM this morning to 8 PM EDT Friday. * IMPACTS. Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. * ADDITIONAL DETAILS. Heat stress increases with the number of consecutive hot days. Hot conditions are forecast for the next five days. The effects of heat are most impactful for more vulnerable urban populations.

* WHAT. A prolonged period of dangerously hot conditions with heat index values near 100 degrees. * WHERE. Portions of east central and southeast Indiana and central, south central, southwest, and west central Ohio. * WHEN. From noon today to 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

An extended period of hot and humid conditions is expected across all of Central Indiana through next weekend. Daily high temperatures in the low to mid 90s with heat indices approaching 100 during the afternoon hours may be hazardous for sensitive and vulnerable populations.

The officials at the Indiana Department of Environmental Management have declared an Air Quality Action Day, IN EFFECT FROM MIDNIGHT TONIGHT TO MIDNIGHT EDT SUNDAY NIGHT. An Air Quality Action Day for Ozone has been issued. Ozone levels are expected to be in the Unhealthy for Sensitive Groups range. Active children and adults, and people with respiratory disease, such as asthma should limit prolonged outdoor exposure. Here are some recommended actions that the public can take: * Walk, bike, carpool or use public transportation. * Avoid using the drive-through and combine errands into one trip. * Avoid refueling your vehicle or using gasoline-powered lawn equipment until after 7pm. * Turn off your engine when idling for more than 30 seconds. * Conserve energy by turning off lights or setting the air conditioner to 75 degrees or above. For additional information, please visit the IDEM Smog page at: https://apps.idem.in.gov/smogwatch