# Heat Advisory: Madison; St. Clair; Monroe; St. Charles; St. Louis; St. Louis City; Jefferson — retained record

> Retained us-gov-api record from us-gov-api:noaa-weather.

Canonical: https://highsignal.app/data/records/2b6b486bf69ffe24

[← sources](https://highsignal.app/data)


source: [us-gov-api](https://highsignal.app/data/us-gov-api) (us-gov-api:noaa-weather)  published 2026-08-31 14:29 ingested 2026-09-01 02:47

[original source ↗](http://www.weather.gov/)

## extract

Heat Advisory — Madison; St. Clair; Monroe; St. Charles; St. Louis; St. Louis City; Jefferson
Severity: Moderate. Certainty: Likely.
* WHAT...Heat index values up to 108.

* WHERE...In Illinois, Madison IL, Monroe IL, and Saint Clair IL
Counties. In Missouri, Jefferson MO, Saint Charles MO, Saint Louis
City MO, and Saint Louis MO Counties.

* WHEN...Until 8 PM CDT Friday.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.

## retained text

The historical document was shared with another weather alert and cannot be attributed to this record. The original extract is preserved above; the exact alert link was not retained.