A Heat Advisory is in effect for Fishers and all of Hamilton County until 9 p.m. Monday, July 27, as high humidity pushes apparent temperatures into potentially dangerous territory.

The National Weather Service said heat index values could reach 105 degrees within the advisory area. Hot temperatures combined with high humidity may cause heat-related illnesses.

The advisory also covers Clinton, Hancock, Shelby and Carroll counties. Fishers, Carmel and Noblesville are among the communities included.

Hamilton County Emergency Management warned that the conditions increase the risk of heat exhaustion and heat stroke. Officials are asking residents to take precautions even if they plan to remain indoors.

Staying cool indoors

Residents should drink water regularly—even before feeling thirsty—and spend time in air-conditioned spaces whenever possible.

Officials also recommend closing blinds or curtains to block direct sunlight, taking cool showers or baths, wearing light and breathable clothing, and choosing lighter meals. Windows may be opened at night if outdoor temperatures fall enough to provide relief.

Precautions for outdoor activity

Anyone who must be outside should try to schedule activities during the early morning or evening, take frequent breaks in shaded areas and carry plenty of water.

Damp cloths or lightly wet clothing can also help the body cool down. Children, older adults and pets should never be left inside a parked vehicle, even briefly.

The National Weather Service advises residents to stay out of the sun when possible and check on relatives and neighbors, particularly older adults, people with health conditions and anyone without reliable air conditioning.