Heat Advisory: Madison; St. Clair; Monroe; St. Charles; St. Louis; St. Louis City; Jefferson

source: us-gov-api (us-gov-api:noaa-weather)published 2026-08-31 14:29ingested 2026-09-01 02:47

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The historical document was shared with another weather alert and cannot be attributed to this record.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.