Marquette Heights Warnings, Watches and Advisories
SAFETY and DATA MESSAGE
When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.
Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Marquette Heights.
Use the Radar Maps link provided to understand the trajectory of a storm.
NWS Active Alerts for IL - Map View
Heat Advisory
Ogle; Lee; De Kalb; La Salle; Kendall; Grundy; Kankakee; Livingston; Iroquois; Ford; Northern Will; Southern Will; Eastern Will; Lake; Porter; Newton; Jasper; Benton
Heat Advisory issued September 2 at 8:56PM CDT until September 3 at 9:00PM CDT by NWS Chicago IL
* WHAT...Heat index values 100 to 105 on Thursday. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 9 PM CDT /10 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Moderate
Likely
Expected
September 2nd, 2026 08:56:00 pm CDT
September 2nd, 2026 08:56:00 pm CDT
September 3rd, 2026 07:00:00 am CDT
Heat Advisory
Buchanan; Delaware; Dubuque; Benton; Linn; Jones; Jackson; Clinton; Jo Daviess; Stephenson; Carroll; Whiteside
Heat Advisory issued September 2 at 8:14PM CDT until September 3 at 7:00PM CDT by NWS Quad Cities IA IL
* WHAT...Heat index values up to 105. * WHERE...Portions of northwest Illinois and east central and northeast Iowa. * WHEN...Until 7 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Thunderstorms and storm outflow may interrupt the heat at times.
Moderate
Likely
Expected
September 2nd, 2026 08:14:00 pm CDT
September 2nd, 2026 08:14:00 pm CDT
September 3rd, 2026 04:15:00 am CDT
Extreme Heat Warning
Iowa; Johnson; Cedar; Muscatine; Scott; Keokuk; Washington; Louisa; Jefferson; Henry; Des Moines; Van Buren; Lee; Rock Island; Henry; Bureau; Putnam; Mercer; Henderson; Warren; Hancock; McDonough; Scotland; Clark
Extreme Heat Warning issued September 2 at 8:14PM CDT until September 4 at 7:00PM CDT by NWS Quad Cities IA IL
* WHAT...Dangerously hot conditions with heat index values of 105 to 110. * WHERE...Portions of north central, northwest, and west central Illinois, east central and southeast Iowa, and northeast Missouri. * WHEN...Until 7 PM CDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.
Severe
Likely
Expected
September 2nd, 2026 08:14:00 pm CDT
September 2nd, 2026 08:14:00 pm CDT
September 3rd, 2026 04:15:00 am CDT
Heat Advisory
Greene; Macoupin; Montgomery; Bond; Fayette; Clinton; Marion; Washington; Randolph; Adams; Brown; Pike; Calhoun; Jersey; Knox; Lewis; Shelby; Marion; Monroe; Ralls; Pike; Boone; Audrain; Moniteau; Cole; Osage; Callaway; Montgomery; Lincoln; Gasconade; Warren; Franklin; Crawford; Washington; St. Francois; Ste. Genevieve; Iron; Madison; Reynolds
Heat Advisory issued September 2 at 2:24PM CDT until September 5 at 8:00PM CDT by NWS St Louis MO
* WHAT...Heat index values up to 104. * WHERE...Portions of south central, southwest, and west central Illinois and central, east central, northeast, and southeast Missouri. * WHEN...Until 8 PM CDT Saturday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Moderate
Likely
Expected
September 2nd, 2026 02:24:00 pm CDT
September 2nd, 2026 02:24:00 pm CDT
September 3rd, 2026 05:30:00 am CDT
Heat Advisory
Madison; St. Clair; Monroe; St. Charles; St. Louis; St. Louis City; Jefferson
Heat Advisory issued September 2 at 2:24PM CDT until September 5 at 8:00PM CDT by NWS St Louis MO
* WHAT...Heat index values up to 106. * 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 Saturday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Moderate
Likely
Expected
September 2nd, 2026 02:24:00 pm CDT
September 2nd, 2026 02:24:00 pm CDT
September 3rd, 2026 05:30:00 am CDT
Extreme Heat Warning
Jefferson; Wayne; Edwards; Wabash; Perry; Franklin; Hamilton; White; Jackson; Williamson; Saline; Gallatin; Union; Johnson; Pope; Hardin; Alexander; Pulaski; Massac; Gibson; Pike; Posey; Vanderburgh; Warrick; Spencer; Fulton; Hickman; Carlisle; Ballard; McCracken; Graves; Livingston; Marshall; Calloway; Crittenden; Lyon; Trigg; Caldwell; Union; Webster; Hopkins; Christian; Henderson; Daviess; McLean; Muhlenberg; Todd; Perry; Bollinger; Cape Girardeau; Wayne; Carter; Ripley; Butler; Stoddard; Scott; Mississippi; New Madrid
Extreme Heat Warning issued September 2 at 1:12PM CDT until September 5 at 8:00PM CDT by NWS Paducah KY
* WHAT...Dangerously hot conditions with heat index values 105 to 110. * WHERE...All of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. * WHEN...Until 8 PM CDT /9 PM EDT/ Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.
Severe
Likely
Expected
September 2nd, 2026 01:12:00 pm CDT
September 2nd, 2026 01:12:00 pm CDT
September 3rd, 2026 04:00:00 am CDT
Extreme Heat Warning
Knox; Stark; Peoria; Marshall; Woodford; Fulton; Tazewell; McLean; Schuyler; Mason; Logan; De Witt; Piatt; Champaign; Vermilion; Cass; Menard; Scott; Morgan; Sangamon; Christian; Macon; Moultrie; Douglas; Coles; Edgar; Shelby; Cumberland; Clark; Effingham; Jasper; Crawford; Clay; Richland; Lawrence
Extreme Heat Warning issued September 2 at 11:14AM CDT until September 4 at 7:00PM CDT by NWS Lincoln IL
* WHAT...Dangerously hot conditions with heat index values up to around 105. Expect minimal relief overnight with lows in the mid 70s. * WHERE...Portions of central, east central, southeast, and west central Illinois. * WHEN...Until 7 PM CDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.
Severe
Likely
Expected
September 2nd, 2026 11:14:00 am CDT
September 2nd, 2026 11:14:00 am CDT
September 3rd, 2026 05:00:00 am CDT
For more official information about severe storms and how to stay safe, visit the National Weather Service's Severe Thunderstorm Safety page. We encourage you to also monitor Excessive Rainfall Forecasts on their Weather Prediction Center website.
Disclaimer and Conditions of Use
This information is provided AS IS and strictly for recreational, educational, and informational purposes only; we disclaim liability of any kind whatsoever, including, without limitation, liability for quality, performance, merchantability and fitness for a particular purpose arising out of the use, or inability to use the data. The information may be inaccurate or incomplete based on how well the corresponding weather station successfully or unsuccessfully reported or recorded it with the instruments which measured the weather at the time; including gaps between hours or even days. Specifically, LocalConditions.com and this data, as presented, may not and should not be used as a reference for any reason relating to legal proceedings, insurance claims, recovery, loss prevention, making predictions, or critical decisions. Lastly, the weather station may be miles away from the actual area of interest. This data may not be leeched or republished.
Currently
 |
81°F |
29.86 inHg.
Barometer 66%
Humidity ESE 9.4 mph Wind |
| Moderate Rain At Times | ||