Weather Alerts For Martinsville, MO

# HEADLINE -------------------- EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM CDT SATURDAY # DETAILS -------------------- WHAT Dangerously hot and prolonged conditions with heat index values up to 105. WHERE Portions of north central, northeast, and northwest Missouri. WHEN Until 8 PM CDT Saturday. IMPACTS Heat related illnesses increase significantly during extreme heat and high humidity events. ISSUED AT Friday, September 4, 2026 at 4:18 AM CDT ISSUED BY National Weather Service Kansas City/Pleasant Hill 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. # AREAS AFFECTED -------------------- Holt, Adair, Andrew, Atchison MO, Chariton, Daviess, De Kalb, Gentry, Grundy, Harrison, Linn MO, Livingston, Macon, Mercer, Nodaway, Putnam, Randolph, Schuyler, Sullivan, Worth Including the cities of Greentop, Brunswick, Savannah, Stewartsville, Green City, Mercer, Fairfax, Keytesville, La Plata, Trenton, Queen City, Osborn, Salisbury, Stanberry, Gallatin, Craig, Rock Port, Union Star, Unionville, Princeton, Maryville, Lancaster, Maysville, Jamesport, Grant City, Albany, King City, Bethany, Macon, Clarksdale, Mound City, Milan, Oregon, Tarkio, Glenwood, Downing, Brookfield, Kirksville, Forest City, Country Club Villa, Chillicothe, Maitland, Marceline, and Moberly

Pollen Index: 11.7 Pollen Level: high Predominant Pollen: Ragweed, Chenopods and Nettle. 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.