# Dense Fog Advisory: Winnebago; Ogle; Lee; De Kalb; La Salle; Grundy; Livingston — retained record

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

Canonical: https://highsignal.app/data/records/d43f23f15948928e

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


source: [us-gov-api](https://highsignal.app/data/us-gov-api) (us-gov-api:noaa-weather)  published 2026-07-27 03:02 ingested 2026-07-27 09:50

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

## extract

Dense Fog Advisory — Winnebago; Ogle; Lee; De Kalb; La Salle; Grundy; Livingston
Severity: Moderate. Certainty: Likely.
* WHAT...For the Extreme Heat Warning, dangerously hot conditions
with peak heat index values 110 to locally over 115 degrees
expected. For the Dense Fog Advisory, visibility less than one
quarter mile in dense fog.

* WHERE...Livingston, De Kalb, La Salle, Lee, Ogle, Winnebago, and
Grundy Counties.

* WHEN...For the Extreme Heat Warning, until 9 PM CDT this evening.
For the Dense Fog Advisory, until 8 AM CDT this morning.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events. Low visibility could make
driving conditions hazardous.

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The historical document was shared with another weather alert and cannot be attributed to this record.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