Weather Alerts For Saint Charles, IA

# HEADLINE -------------------- HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT SATURDAY # DETAILS -------------------- WHAT Heat index values up to 105. WHERE Portions of central and southern Iowa. WHEN Until 7 PM CDT Saturday. 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. ISSUED AT Thursday, September 3, 2026 at 8:03 PM CDT ISSUED BY National Weather Service Des Moines IA HEADER URGENT - WEATHER MESSAGE # 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. 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. # AREAS AFFECTED -------------------- Ringgold, Warren, Adair, Adams, Appanoose, Audubon, Cass, Clarke, Dallas, Davis, Decatur, Guthrie, Jasper, Lucas, Madison, Mahaska, Marion, Monroe, Polk, Poweshiek, Taylor, Union, Wapello, Wayne Including the cities of Corning, Lamoni, Corydon, Bayard, Waukee, Pella, Audubon, Winterset, Oskaloosa, Bedford, Knoxville, Bloomfield, Exira, Casey, Seymour, Adair, Atlantic, Mount Ayr, Panora, Chariton, Carlisle, Ottumwa, Allerton, Greenfield, Leon, Creston, Fontanelle, Lenox, Indianola, Des Moines, Grinnell, Guthrie Center, Newton, Norwalk, Adel, New Market, Earlham, Stuart, Perry, Humeston, Osceola, Albia, and Centerville

Pollen Index: 11.5 Pollen Level: high Predominant Pollen: Ragweed, Nettle and Chenopods. The pollen levels for Friday will remain relatively stable in the extremely high range. The pollen producing plants are delivering a fairly constant level of pollen into the air.