Indianapolis, Indiana – Temperatures across Indiana are climbing into dangerous territory, with a heat advisory in effect through 8 p.m. Tuesday as oppressive humidity drives the heat index to 105°F or higher in dozens of counties.
According to the National Weather Service in Indianapolis, the advisory spans nearly the entire state—impacting cities including Lafayette, Terre Haute, Muncie, Columbus, and Bloomington. Overnight lows are offering little relief, staying stuck in the mid-70s, which increases the risk of heat-related illness, especially for vulnerable populations.
Residents in Marion, Johnson, Vigo, Shelby, and Bartholomew counties should take precautions to avoid prolonged outdoor activity. Emergency managers recommend seeking air-conditioned shelter, drinking water frequently, and checking on elderly neighbors and relatives. Urban areas like downtown Indianapolis may experience even higher heat retention due to the “urban heat island” effect.
This stretch marks one of the hottest periods of summer so far, with multiple days of triple-digit heat index values expected. Officials warn that extended exposure could lead to heat exhaustion or heat stroke if proper steps aren’t taken.
The heat advisory remains active until 8 p.m. Tuesday, but additional alerts may be issued if the trend continues.
