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Home Return to list Heat Advisory 0003 Issued by the Chicago Forecast Office
Action: New Issued At: 2025-07-27 13:27:48 300 WWUS73 KLOT 271827 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 127 PM CDT Sun Jul 27 2025 ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002- 010-011-019-280430- /O.NEW.KLOT.HT.Y.0003.250728T1700Z-250729T0100Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will- Eastern Will-Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Sycamore, Evanston, Watseka, Crystal Lake, Kankakee, Valparaiso, La Salle, Bourbonnais, Gibson City, Mokena, Pontiac, Coal City, Carol Stream, Oak Lawn, Northbrook, Plano, Gilman, DeMotte, La Grange, Lombard, Woodstock, Waukegan, McHenry, Naperville, Fowler, Streator, Gary, Portage, Joliet, Wheaton, Ottawa, Peotone, Oak Forest, Cicero, Buffalo Grove, Manhattan, Marseilles, Rochelle, Mendota, Oak Park, Belvidere, Des Plaines, Chicago, Oregon, Yorkville, Roselawn, Crete, Bolingbrook, Byron, Rensselaer, DeKalb, Gurnee, Elgin, Palatine, Bradley, Dixon, Aurora, Schaumburg, Channahon, Park Forest, Wilmington, Kentland, Oswego, Chesterton, Paxton, Morris, Orland Park, Dwight, Oxford, Rockford, Minooka, Beecher, Hammond, Merrillville, Mundelein, Plainfield, Lemont, Downers Grove, Algonquin, Morocco, Fairbury, and Calumet City 127 PM CDT Sun Jul 27 2025 /227 PM EDT Sun Jul 27 2025/ ...HEAT ADVISORY IN EFFECT FROM NOON CDT /1 PM EDT/ TO 8 PM CDT /9 PM EDT/ MONDAY... * WHAT...Heat index values 105 to 109 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...From noon CDT /1 PM EDT/ to 8 PM CDT /9 PM EDT/ Monday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Action: Continued Issued At: 2025-07-27 21:27:00 260 WWUS73 KLOT 280226 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 926 PM CDT Sun Jul 27 2025 ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002- 010-011-019-281230- /O.CON.KLOT.HT.Y.0003.250728T1700Z-250729T0100Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will- Eastern Will-Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Crete, Elgin, Byron, Park Forest, Fairbury, McHenry, Wilmington, Plano, Rensselaer, Oregon, Orland Park, Mokena, Waukegan, Pontiac, Gurnee, Buffalo Grove, Plainfield, Naperville, Cicero, Mundelein, La Salle, Peotone, Merrillville, Schaumburg, Dixon, Northbrook, Crystal Lake, Rockford, Morris, Beecher, Joliet, Watseka, Bolingbrook, Oak Lawn, Paxton, Palatine, Carol Stream, Bourbonnais, Roselawn, Downers Grove, Fowler, Rochelle, Woodstock, Kankakee, Mendota, Sycamore, Morocco, Chicago, Belvidere, Oswego, Oak Forest, Ottawa, Calumet City, Algonquin, Manhattan, Gibson City, Yorkville, DeKalb, Dwight, Hammond, Lombard, Minooka, Lemont, Des Plaines, Oak Park, Kentland, Bradley, Aurora, Marseilles, La Grange, Wheaton, Evanston, Channahon, Portage, Streator, Gilman, Gary, DeMotte, Oxford, Chesterton, Coal City, and Valparaiso 926 PM CDT Sun Jul 27 2025 /1026 PM EDT Sun Jul 27 2025/ ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON CDT /1 PM EDT/ TO 8 PM CDT /9 PM EDT/ MONDAY... * WHAT...Heat index values up to 105 to 109 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...From noon CDT /1 PM EDT/ to 8 PM CDT /9 PM EDT/ Monday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Petr Action: Continued Issued At: 2025-07-28 03:56:41 043 WWUS73 KLOT 280856 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 356 AM CDT Mon Jul 28 2025 ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002- 010-011-019-281900- /O.CON.KLOT.HT.Y.0003.250728T1700Z-250729T0100Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will- Eastern Will-Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Chicago, Plano, Byron, Wheaton, Fowler, Aurora, Buffalo Grove, Algonquin, Evanston, Morris, Cicero, Belvidere, Gibson City, Gilman, Paxton, Naperville, Beecher, Watseka, Mendota, Gurnee, Oak Forest, Mokena, Streator, Hammond, Lemont, Valparaiso, Chesterton, Plainfield, Crystal Lake, Oswego, Rensselaer, Woodstock, McHenry, Rochelle, Dwight, Pontiac, Oregon, Calumet City, Peotone, Elgin, Dixon, Palatine, Manhattan, Oxford, Sycamore, Bourbonnais, Schaumburg, Park Forest, DeMotte, Morocco, Rockford, Carol Stream, Orland Park, Crete, Roselawn, Gary, Joliet, Bradley, Northbrook, DeKalb, Waukegan, Yorkville, La Salle, Minooka, Mundelein, Oak Park, Downers Grove, Ottawa, Oak Lawn, Channahon, Merrillville, Portage, La Grange, Bolingbrook, Coal City, Marseilles, Wilmington, Lombard, Kankakee, Fairbury, Kentland, and Des Plaines 356 AM CDT Mon Jul 28 2025 /456 AM EDT Mon Jul 28 2025/ ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON CDT /1 PM EDT/ TODAY TO 8 PM CDT /9 PM EDT/ THIS EVENING... * WHAT...Heat index values up to 105 to 109 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...From noon CDT /1 PM EDT/ today to 8 PM CDT /9 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Ratzer Action: Continued Issued At: 2025-07-28 10:32:51 364 WWUS73 KLOT 281532 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 1032 AM CDT Mon Jul 28 2025 ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002- 010-011-019-290100- /O.CON.KLOT.HT.Y.0003.250728T1700Z-250729T0100Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will- Eastern Will-Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Portage, Orland Park, Oswego, Marseilles, Fowler, Buffalo Grove, Gilman, Bolingbrook, Naperville, Lemont, Dixon, Wheaton, Fairbury, Dwight, Gary, Ottawa, Kentland, Crystal Lake, La Grange, Kankakee, Mokena, Park Forest, Plainfield, Chesterton, Bourbonnais, Oak Forest, Manhattan, Woodstock, Chicago, Joliet, Lombard, Crete, McHenry, Evanston, Minooka, Streator, Carol Stream, Des Plaines, Oak Lawn, Gibson City, Algonquin, Northbrook, Pontiac, Wilmington, Morris, DeKalb, Gurnee, Peotone, Calumet City, Oregon, La Salle, Yorkville, Waukegan, Rochelle, Palatine, Rensselaer, Elgin, Rockford, Plano, Aurora, Cicero, Downers Grove, Oxford, Mundelein, Hammond, Schaumburg, Roselawn, Byron, Mendota, Channahon, Sycamore, DeMotte, Beecher, Watseka, Paxton, Merrillville, Bradley, Oak Park, Belvidere, Valparaiso, Morocco, and Coal City 1032 AM CDT Mon Jul 28 2025 /1132 AM EDT Mon Jul 28 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT /9 PM EDT/ THIS EVENING... * WHAT...Heat index values up to 105 to 109 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 8 PM CDT /9 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Kluber Action: Continued Issued At: 2025-07-28 15:07:57 609 WWUS73 KLOT 282007 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 307 PM CDT Mon Jul 28 2025 ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002- 010-011-019-290100- /O.CON.KLOT.HT.Y.0003.000000T0000Z-250729T0100Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will- Eastern Will-Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Gary, Mokena, Wilmington, DeMotte, Oregon, Aurora, Dixon, Yorkville, Belvidere, Watseka, Schaumburg, Marseilles, Byron, Oak Lawn, Park Forest, Crete, Mundelein, Oak Park, Cicero, Des Plaines, Morocco, Fairbury, Gilman, Northbrook, Kentland, Fowler, McHenry, Gurnee, Mendota, Oak Forest, Lemont, Downers Grove, Joliet, Evanston, Beecher, Algonquin, Paxton, Wheaton, Valparaiso, Plainfield, Crystal Lake, Naperville, Morris, Coal City, Plano, Dwight, Chicago, Merrillville, Calumet City, Lombard, Minooka, Roselawn, Oxford, Buffalo Grove, La Grange, Portage, Sycamore, Rockford, Chesterton, Rensselaer, Gibson City, Rochelle, Bolingbrook, La Salle, Hammond, Orland Park, Peotone, Oswego, Bourbonnais, Ottawa, Streator, Kankakee, Channahon, Elgin, Woodstock, Waukegan, Bradley, Manhattan, Pontiac, Carol Stream, Palatine, and DeKalb 307 PM CDT Mon Jul 28 2025 /407 PM EDT Mon Jul 28 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT /9 PM EDT/ THIS EVENING... * WHAT...Heat index values up to 105. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 8 PM CDT /9 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Action: Expired Issued At: 2025-07-28 19:40:03 001 WWUS73 KLOT 290039 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 739 PM CDT Mon Jul 28 2025 ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002- 010-011-019-290145- /O.EXP.KLOT.HT.Y.0003.000000T0000Z-250729T0100Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will- Eastern Will-Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Yorkville, Woodstock, Plainfield, Marseilles, Beecher, Coal City, Oak Park, Wilmington, Des Plaines, Merrillville, Gibson City, Chicago, Algonquin, Manhattan, Fairbury, Roselawn, Mendota, Joliet, Oregon, Mundelein, DeMotte, Chesterton, La Salle, Bradley, Rochelle, Rensselaer, Bolingbrook, Gary, Downers Grove, Bourbonnais, Crete, Schaumburg, Fowler, Dwight, Streator, Gurnee, Aurora, Oak Lawn, Waukegan, Buffalo Grove, Gilman, Belvidere, Minooka, Morris, Kankakee, Plano, Dixon, Oswego, Channahon, Orland Park, Paxton, Oxford, Pontiac, Elgin, Northbrook, Carol Stream, Portage, McHenry, Palatine, Lemont, Mokena, Peotone, Oak Forest, Park Forest, Naperville, Valparaiso, Hammond, Wheaton, Rockford, Kentland, DeKalb, Lombard, La Grange, Calumet City, Ottawa, Watseka, Sycamore, Byron, Crystal Lake, Cicero, Morocco, and Evanston 739 PM CDT Mon Jul 28 2025 /839 PM EDT Mon Jul 28 2025/ ...HEAT ADVISORY WILL EXPIRE AT 8 PM CDT /9 PM EDT/ THIS EVENING... Heat index values are diminishing this evening, allowing the advisory to expire. $$ DK | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||