# HEADLINE
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EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 10 PM CDT WEDNESDAY
# DETAILS
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WHAT
Dangerously hot and humid conditions with multiple days of heat index values of 100 to 110 expected, along with nighttime lows not falling below the mid to upper 70s.
WHERE
Portions of northwest and west central Illinois, east central and southeast Iowa, and northeast Missouri.
WHEN
Until 10 PM CDT Wednesday.
IMPACTS
Heat related illnesses increase significantly during extreme heat and high humidity events.
ISSUED AT
Tuesday, June 30, 2026 at 8:14 AM CDT
ISSUED BY
National Weather Service Quad Cities IA IL
HEADER
URGENT - WEATHER MESSAGE
# PRECAUTIONARY/PREPAREDNESS ACTIONS
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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
# AREAS AFFECTED
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Henderson, Jefferson, Cedar, Clark, Des Moines, Hancock, Henry IA, Iowa, Johnson, Keokuk, Lee, Louisa, McDonough, Mercer, Muscatine, Rock Island, Scotland, Scott, Van Buren, Warren, Washington
Including the cities of Fairfield, Moline, Burlington, Macomb, Bettendorf, Sigourney, Wapello, Marengo, Muscatine, Rock Island, Carthage, Fort Madison, Oquawka, Kahoka, Tipton, Washington, Memphis, Keosauqua, Davenport, Aledo, Iowa City, Mount Pleasant, and Monmouth
