# Extreme Heat Warning: Benton; Linn; Iowa; Johnson; Cedar; Muscatine; Scott; Keokuk; Washington; Louisa; Jefferson; Henry; Des Moines; Van Buren; Lee; Rock Island; Mercer; Henderson; Warren; Hancock; McDonough; Scotland; Clark — retained record

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

Canonical: https://highsignal.app/data/records/601d28e320604ff6

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


source: [us-gov-api](https://highsignal.app/data/us-gov-api) (us-gov-api:noaa-weather)  published 2026-06-28 01:21 ingested 2026-06-28 12:51

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

## extract

Extreme Heat Warning — Benton; Linn; Iowa; Johnson; Cedar; Muscatine; Scott; Keokuk; Washington; Louisa; Jefferson; Henry; Des Moines; Van Buren; Lee; Rock Island; Mercer; Henderson; Warren; Hancock; McDonough; Scotland; Clark
Severity: Severe. Certainty: Likely.
* WHAT...Dangerously hot conditions with heat index values exceeding
100 degrees multiple days, with several locations seeing upwards
to 105 to 110.

* WHERE...Portions of northwest and west central Illinois, east
central and southeast Iowa, and northeast Missouri.

* WHEN...From 1 PM this afternoon to 9 PM CDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.

* ADDITIONAL DETAILS...There is the possibility that excessive heat
will last for much of next week. Thunderstorms and associated
cloud debris may interrupt the excessive heat at times late in the
week.

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The historical document was shared with another weather alert and cannot be attributed to this record.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