Data source: National Weather Service (NWS)

Extreme Heat

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 2:00 PM EDT

Areas affected: Dallas; Polk; Jasper; Poweshiek; Madison; Warren; Marion; Mahaska; Union; Clarke; Lucas; Monroe; Wapello; Ringgold; Decatur; Wayne; Appanoose; Davis

Heat Advisory issued August 31 at 2:54AM CDT until September 2 at 7:00PM CDT by NWS Des Moines IA

- WHAT...Heat index values up to 100-103 degrees.

• WHERE...Portions of central and south central Iowa, including the Des Moines metro.

• WHEN...From 1 PM this afternoon 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 degrees each day, the combination of the longevity of the heat and little or limited relief during the overnight periods with warm lows 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 Des Moines IA

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.