FirstAlerts
Severe WeatherVersion 5

Heat advisory issued for Indiana starting Sept. 3

A heat advisory is in effect for all of Indiana beginning at 11 a.m. on September 3, 2026, with heat index values potentially reaching 105 to 108 degrees.

4 reports on this incident · first at Aug 31, 2026, 3:01 p.m. ET

By AI ReporterFirst reported Sep 1, 2026, 5:04 a.m. ETUpdated Sep 4, 2026, 3:27 p.m. ET
A is in effect for all of Indiana, including central Indiana, beginning at 11 a.m. on September 3, 2026, according to and WISH-TV. The warns of dangerous heat, with WTKR reporting heat index values could reach 105 to 108 degrees, while WISH-TV reports values could reach around 100 to 105 degrees. The end time of the is disputed: WTKR reports it ends at 8 p.m. on September 3, while WISH-TV reports it extends until 8 p.m. on September 4. WISH-TV reports the heat is part of a late summer heat wave, with highs expected in the 90s and heat indices up to around 105. Anyone spending extended time outdoors should take frequent breaks and stay hydrated, WISH-TV reported.

Earlier reports

  1. Sep 3, 2026, 5:50 a.m. ET

    Heat Advisory Issued for Indiana as Heat Index Expected to Reach 105-108

    A heat advisory has been issued for all of Indiana, according to reports from wishtv.com and wtkr.com. The advisory warns that anyone spending extended time outdoors should take frequent breaks and stay hydrated, as reported by wishtv.com.

    The advisory begins at 11 a.m. on Thursday, September 3, 2026, according to wtkr.com. Reports conflict on when it ends: wishtv.com reports it ends at 8 p.m. on Friday, September 4, 2026, while wtkr.com reports it ends at 8 p.m. on Thursday, September 3, 2026.

    Forecasts describe the heat as oppressive. wishtv.com reports that the combination of high temperatures in the mid-90s and oppressive humidity will make it feel like an oven every afternoon from Tuesday through Thursday. Another report from wishtv.com says to expect mostly sunny skies with highs climbing into the middle 90s. A late summer heat wave continues with expected highs in the 90s and heat indices up to around 105, according to wishtv.com. wtkr.com reports that heat index values will reach 105 to 108 today.

  2. Sep 2, 2026, 3:53 p.m. ET

    Heat Advisory Extended to 8 PM for Central Indiana

    The heat advisory for Central Indiana has been extended and is now in effect until 8 PM on September 4, according to wishtv.com. The advisory covers all of Indiana, with central Indiana under the most immediate threat.

    Forecasters expect highs in the middle 90s with oppressive humidity, making it feel like an oven each afternoon through September 4, as reported by wishtv.com. Heat indices could reach up to around 105, according to wishtv.com.

    Officials advise anyone spending extended time outdoors to take frequent breaks and stay hydrated.

  3. Aug 31, 2026, 3:01 p.m. ETFirst report

    Heat Advisory Issued for All of Indiana as Late Summer Heat Wave Continues

    A heat advisory is in effect for all of Indiana, according to a report from WISH-TV. The advisory comes as a late summer heat wave continues, with expected highs in the 90s and heat indices up to around 105.

    The advisory was reported by WISH-TV, which noted the ongoing heat wave. The exact start and end times of the advisory have not been specified in the report.

Was this report accurate and useful?

Sources

Revision history

  1. Version 54 Sept 2026, 19:27current

    Updated to reflect the advisory start time and the conflicting end times reported by WTKR and WISH-TV.

  2. Version 43 Sept 2026, 09:50current

    Added start and end times, resolved date conflicts, and included heat index figures from sources.

  3. Version 43 Sept 2026, 10:53

    Updated to reflect the advisory start time and clarified the conflicting end times and heat index ranges from the two sources.

  4. Version 33 Sept 2026, 10:23

    Updated to reflect the advisory start time and the conflicting end times reported by WTKR and WISH-TV.

  5. Version 32 Sept 2026, 13:30

    Added specific forecast details from the three wishtv.com reports, including temperature ranges and heat index values.

  6. Version 23 Sept 2026, 10:00

    Clarified the conflicting end times and heat index values, attributing each to the respective outlet.

  7. Version 21 Sept 2026, 11:16

    Added the conflicting descriptions of the heat and humidity from the two wishtv.com reports.

  8. Version 131 Aug 2026, 19:08

    First published.

  9. Version 13 Sept 2026, 09:56

    First published.

  10. Version 131 Aug 2026, 19:01current

    First published.

  11. Version 12 Sept 2026, 19:53current

    First published.

How we work

This site models an investigative reporter rather than a wire desk. The aim is the most complete, accurate and timely account we can assemble — all three, not a trade between them. Reports go out within minutes of the coverage they are built from, carrying context a newsroom would otherwise need a day and a records request to gather: what has happened at this place before, what the operator’s record is, which aircraft it actually was.

Reports are built from primary sources — accident and court records, official registries, weather observations, agency statements — and from reputable news organisations, each named where their reporting is used. Facts are extracted before anything is written, and every one must be supported by a quotation found in the source itself; the model that writes the report is given only those verified facts and never sees the article, so it cannot introduce a detail no source stated.

Where sources disagree we publish the disagreement, attributed, rather than picking a figure. Where a fact comes from a record rather than a reporter, we say so, and the language matches: an instrument reading is never described as something anyone confirmed. Some things are deliberately withheld — a suspect is not named until an agency names them on the record, victims until families or officials release them — and corrections appear as visible revisions, never as silent edits.

None of that makes a report true. A quotation check proves a source said something, not that it was right, and an automated system can be confidently wrong in ways the checks do not catch. If something here is wrong, the feedback above is how it gets found. The full methodology, including what we refuse to publish.