La Salle County, IL

Alerts

Advisory Area
County Line

Alerts are listed in order of start time and level of severity. Click on the alert title to read details for each alert.

In effect from Sunday 07/26 12:00 PM CDT – Sunday 07/26 8:00 PM CDT

Issued by NWS Chicago IL

What

Heat index values up to 105 expected.

Where

Livingston, Boone, La Salle, Lee, Ogle, and Winnebago Counties.

When

Until 8 PM CDT this evening.

Impacts

Hot temperatures and high humidity may cause heat illnesses.

What to Do

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.


Areas Impacted

  • Winnebago
  • Boone
  • Ogle
  • Lee
  • La Salle
  • Livingston

Tips to Stay Safe

A Heat Advisory means dangerous heat conditions are happening now or soon. Take action before, during and after the heat to stay safe. 

  • Stay in air-conditioned spaces if possible. Find cooling centers or places with AC in your community that you can go to, like libraries or shopping malls. 
  • Stay hydrated and stock up on clean drinking water to get you through multiple days of heat.
  • Reschedule outdoor activities for cooler times of the day, and take breaks in the shade or air conditioning.
  • Cover windows with curtains or shades, or use window reflectors designed to reflect heat back outside. 
  • Check on friends, family, and neighbors, especially those who do not have air conditioning or spend much of their time alone. 

Make sure you know the signs of heat-related illness and how to respond.

Briefings

No recent briefing available

From the Forecaster

Periods of Storms Possible Through Monday Evening

Created by the NWS Chicago WFO

There remains a potential for multiple rounds of storms to affect the area late tonight into Monday morning and again late Monday afternoon and evening. Storm coverage remains uncertain, and some areas may not see storms at all. Wherever storms do occur, severe weather will be possible with damaging winds as the primary threat.

Headline: Periods of Storms Possible Through Monday.  Sub Headline: Storm coverage remains uncertain, but severe weather will be possible wherever storms occur. What To Expect: Multiple Potential Rounds of Thunderstorms.  Main Storm Time Windows: Window #1: 3 AM - 12 PM CDT Mon. Window #2: 6 PM Mon. - 12 AM Tue. Hazards from Strongest Thunderstorms: Damaging Winds – Capable of downing trees. Damaging Hail – Capable of denting cars and siding. Localized Flash Flooding. Hazards From All Thunderstorms:  Lightning Strikes.  Torrential Rainfall.  Gusty Winds.  What To Do: Have multiple ways to get weather warnings. Stay tuned for the latest forecast updates.    Graphic Created: Sunday, July 26, 2026 2:10 PM CDT

Seven-day Weather Risk Overview

The graphic shows the daily risk summary for 7 days. Daily risk is based on highest risk factor for that day.

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