Weather Alerts For Pilot Knob, MO

# HEADLINE -------------------- EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM CDT SATURDAY # DETAILS -------------------- WHAT Dangerously hot conditions with heat index values up to 113. WHERE Portions of south central and southwest Illinois and central, east central, and southeast Missouri. WHEN Until 9 PM CDT Saturday. IMPACTS Heat related illnesses increase significantly during extreme heat and high humidity events. ISSUED AT Thursday, August 13, 2026 at 3:34 AM CDT ISSUED BY National Weather Service St Louis MO 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. 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. Heat stroke is an emergency! Call 9 1 1. People in the Saint Louis Metropolitan Area can get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a land line phone dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668. # AREAS AFFECTED -------------------- Madison MO, Monroe IL, Montgomery MO, Saint Louis MO, Washington MO, Boone MO, Callaway MO, Clinton IL, Cole MO, Crawford MO, Franklin MO, Gasconade MO, Iron MO, Jefferson MO, Madison IL, Moniteau MO, Osage MO, Randolph IL, Reynolds MO, Saint Charles MO, Saint Clair IL, Saint Francois MO, Saint Louis City MO, Sainte Genevieve MO, Warren MO, Washington IL Including the cities of Chester, Sparta, Saint Charles, Saint Louis, Columbia, Fulton, Union, Edwardsville, Washington, Alton, Sullivan, Belleville, Farmington, Jefferson City, and Cahokia

Pollen Index: 8.8 Pollen Level: medium-high Predominant Pollen: Grass, Chenopods and Nettle. Pollen concentrations for Thursday will be falling but will remain in the high range. The cause for the falling pollen levels is falling temperatures, rising humidity, and expected precipitation in the morning which tends to wash pollen out of the air.