HEAT ADVISORY
HEAT ADVISORY ISSUED SEPTEMBER 3 AT 1:08AM CDT UNTIL SEPTEMBER 3 AT 7:00PM CDT
Effective: 2026-09-03 01:08:00
Expires: 2026-09-03 19:00:00
Issued by: NWS Chicago IL
Alert Text
* WHAT...HEAT INDEX VALUES OF 100 TO 105 EXPECTED. THIS IS THE THIRDDAY IN A ROW WITH FORECAST OR OBSERVED HEAT INDICES ABOVE 100 DEGREES.
* WHERE...BOONE, DUPAGE, KANE, AND MCHENRY COUNTIES.
* WHEN...UNTIL 7 PM CDT THIS EVENING.
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT ILLNESSES ESPECIALLY AFTER SEVERAL DAYS OF DANGEROUS HEAT.
* ADDITIONAL DETAILS...A COLD FRONT POSSIBLY ACCOMPANIED BY THUNDERSTORMS WILL MOVE INLAND FROM LAKE MICHIGAN THIS EVENING LEADING TO RAPIDLY IMPROVING CONDITIONS.
More Information
Target Area
BOONE, MCHENRY, KANE, DUPAGE
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