Data source: National Weather Service (NWS)

Extreme Heat

Heat Advisory (ADVISORY) - expires August 31, 2026 at 2:30 PM EDT

Areas affected: Clay; Greene; Craighead; Poinsett; Mississippi; Cross; Crittenden; St. Francis; Lee; Phillips; Dunklin; Pemiscot; DeSoto; Tunica; Tate; Coahoma; Quitman; Panola; Tallahatchie; Lake; Obion; Weakley; Henry; Dyer; Gibson; Lauderdale; Tipton; Haywood; Crockett; Shelby; Fayette

Heat Advisory issued August 30 at 7:13PM CDT until August 31 at 8:00PM CDT by NWS Memphis TN

- WHAT...Heat index values up to 107 expected.

• WHERE...Portions of East Arkansas, North Mississippi, Southeast Missouri, and West Tennessee.

• WHEN...From noon to 8 PM CDT Monday.

• 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.

Source: NWS Memphis TN

Heat Advisory (ADVISORY) - expires August 31, 2026 at 12:00 PM EDT

Areas affected: Iowa; Johnson; Cedar; Muscatine; Scott; Keokuk; Washington; Louisa; Jefferson; Henry; Des Moines; Van Buren; Lee; Rock Island; Henry; Mercer; Henderson; Warren; Hancock; McDonough; Scotland; Clark

Heat Advisory issued August 31 at 2:51AM CDT until September 2 at 7:00PM CDT by NWS Quad Cities IA IL

- WHAT...Heat index values up to 103 expected.

• WHERE...Portions of northwest and west central Illinois, east central and southeast Iowa, and northeast Missouri.

• WHEN...From 1 PM this afternoon to 7 PM CDT Wednesday.

• IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

• ADDITIONAL DETAILS...Thunderstorms and storm outflow may interrupt the heat at times.

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.

To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.

Source: NWS Quad Cities IA IL

Heat Advisory (ADVISORY) - expires August 31, 2026 at 3:15 PM EDT

Areas affected: Madison; St. Clair; Monroe; St. Charles; St. Louis; St. Louis City

Heat Advisory issued August 30 at 11:03PM CDT until September 4 at 8:00PM CDT by NWS St Louis MO

- WHAT...Heat index values up to 105 expected.

• WHERE...In Illinois, Madison IL, Monroe IL, and Saint Clair IL Counties. In Missouri, Saint Charles MO, Saint Louis City MO, and Saint Louis MO Counties.

• WHEN...From noon Monday to 8 PM CDT Friday.

• 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location.

Source: NWS St Louis MO

Heat Advisory (ADVISORY) - expires August 31, 2026 at 3:15 PM EDT

Areas affected: Greene; Macoupin; Montgomery; Bond; Fayette; Marion; 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 August 30 at 11:03PM CDT until September 4 at 8:00PM CDT by NWS St Louis MO

- WHAT...Heat index values up to 105 expected.

• WHERE...Portions of south central, southwest, and west central Illinois and central, east central, northeast, and southeast Missouri.

• WHEN...From noon Monday to 8 PM CDT Friday.

• 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.

To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.

Source: NWS St Louis MO

Heat Advisory (ADVISORY) - expires August 31, 2026 at 5:15 PM EDT

Areas affected: 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

Heat Advisory issued August 30 at 10:48PM CDT until September 4 at 8:00PM CDT by NWS Paducah KY

- WHAT...Daily heat index values up to 100-106 expected.

• WHERE...Portions of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri.

• WHEN...From 10 AM CDT /11 AM EDT/ Monday to 8 PM CDT /9 PM EDT/ Friday.

• IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

• ADDITIONAL DETAILS...Heat index values will be closer to 100 on Monday. Low rain chances on Friday may provide limited relief.

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.

Source: NWS Paducah KY

Heat Advisory (ADVISORY) - expires August 31, 2026 at 5:15 PM EDT

Areas affected: Atchison; Miami; Linn; Doniphan; Leavenworth; Wyandotte; Johnson; Worth; Gentry; Harrison; Mercer; Putnam; Schuyler; Andrew; De Kalb; Daviess; Grundy; Sullivan; Adair; Buchanan; Clinton; Caldwell; Livingston; Linn; Macon; Platte; Clay; Ray; Carroll; Chariton; Randolph; Jackson; Lafayette; Saline; Howard; Cass; Johnson; Pettis; Cooper; Bates; Henry

Heat Advisory issued August 31 at 5:01AM CDT until September 2 at 7:00PM CDT by NWS Kansas City/Pleasant Hill MO

- WHAT...Heat index values up to 103 expected.

• WHERE...Portions of east central and northeast Kansas and central, north central, northeast, northwest, and west central Missouri.

• WHEN...From noon today to 7 PM CDT Wednesday.

• IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

• ADDITIONAL DETAILS...While heat index values may not reach 105 each day, the combination of the longevity of the heat and little or limited relief during overnight periods have prompted the multi-day Heat Advisory.

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.

Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Source: NWS Kansas City/Pleasant Hill MO

Heat Advisory (ADVISORY) - expires September 1, 2026 at 2:00 PM EDT

Areas affected: Bourbon; Crawford; Cherokee; Benton; Morgan; Miller; Maries; Vernon; St. Clair; Hickory; Camden; Pulaski; Phelps; Barton; Cedar; Polk; Dallas; Laclede; Texas; Dent; Jasper; Dade; Greene; Webster; Wright; Newton; Lawrence; Christian; Douglas; Howell; Shannon; McDonald; Barry; Stone; Taney; Ozark; Oregon

Heat Advisory issued August 30 at 10:44PM CDT until September 4 at 8:00PM CDT by NWS Springfield MO

- WHAT...Heat index values of 100 to 105\. Minimal overnight relief with temperatures in the middle to upper 70s.

• WHERE...Portions of southeast Kansas and central, east central, south central, southwest, and west central Missouri.

• WHEN...From noon Monday to 8 PM CDT Friday.

• 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.

Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Source: NWS Springfield MO

Heat Advisory (ADVISORY) - expires August 31, 2026 at 3:15 PM EDT

Areas affected: Jefferson

Heat Advisory issued August 30 at 11:03PM CDT until September 4 at 8:00PM CDT by NWS St Louis MO

- WHAT...Heat index values up to 105 expected.

• WHERE...Jefferson MO County.

• WHEN...From noon Monday to 8 PM CDT Friday.

• 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location.

Source: NWS St Louis MO

Source

Alert data provided by the National Weather Service (NWS). This page shows active alerts only and is refreshed daily. For real-time updates, visit weather.gov.