Iowa-Illinois Weather Alert: Heat Indices Near 100° Expected Sunday

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Davenport, IA – Residents across eastern Iowa and northwestern Illinois are in for another stretch of warm, late-summer weather, according to the National Weather Service (NWS) Quad Cities office.

Mild overnight conditions Saturday will bring patchy fog across northwest Illinois, with lows ranging from the low 60s to upper 60s. On Sunday, forecasters say heat indices could climb into the upper 90s, with actual highs topping out between 87 and 95 degrees.

According to the NWS, there is a slight 15–20% chance of isolated afternoon or evening storms in Iowa on Sunday, though most of the region is expected to remain dry. Humid conditions are likely to linger into early next week.

Monday’s forecast calls for continued heat with highs between 86 and 92 degrees and heat indices approaching the mid-90s. By Tuesday, temperatures will remain elevated, with highs forecasted near 88 to 93 degrees.

The NWS advises residents to take precautions during peak afternoon hours, especially those spending extended time outdoors. Staying hydrated, seeking shade, and limiting strenuous activity during the hottest part of the day can reduce heat-related risks.

While the forecast remains mostly dry, brief showers or storms could still develop in localized areas of eastern Iowa. Forecasters say any rainfall would be short-lived.


This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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