FirstAlerts

Extreme Heat Watch Issued for St. Louis Region

The National Weather Service warns of dangerously hot conditions from Monday afternoon through Friday evening.

By AI ReporterWritten Aug 30, 2026, 1:53 p.m. ET
The National Weather Service in St. Louis has issued an for parts of Illinois and Missouri, effective from Monday afternoon, August 31, through Friday evening, September 4. The covers counties, including Clinton, Washington, Madison, Monroe, Randolph, and Saint Clair in Illinois, and Saint Charles, Saint Louis, and Saint Louis City in Missouri. Forecasters say dangerously hot conditions are possible, with heat index values of 102 to 108 degrees and morning lows from 75 to 80 degrees for several consecutive days. The NWS advises residents to drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check on relatives and neighbors. Heat-related illnesses increase significantly during extreme heat and high humidity events. The was issued at 12:27 p.m. on August 30. Residents are urged to monitor the latest forecasts and warnings for updates.

Was this report accurate and useful?

Sources

Revision history

  1. Version 130 Aug 2026, 17:53current

    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.