Central Illinois Weather Alert: Dense Fog Lingers Before 90s Return Monday, July 28 — Heat Index May Hit 102 in Moline

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Moline, Illinois – Motorists around Moline should expect reduced visibility and slick roads by midday Monday as storms begin moving across the region. Combined with heat index values nearing 102°F, the start of the workweek poses both travel and health risks.

According to the National Weather Service in the Quad Cities, scattered thunderstorms are expected between 7 a.m. and 1 p.m. Monday, July 28, with lingering humidity and heat throughout the afternoon. Dense fog may persist in some river valleys early, particularly near and north of Interstate 80, where visibility could dip below a quarter mile.

After the morning fog clears, conditions will turn hot and sticky, with actual highs near 92°F and south winds at 5 to 10 mph. Residents are urged to stay hydrated, limit outdoor activity, and monitor road conditions — especially if commuting near local rivers already dealing with minor flooding.

While storms Monday should remain isolated, stronger complexes are possible Monday night through Tuesday. These may temporarily lower temperatures and could bring gusty winds or lightning. NWS confidence in severe impacts remains low but continues to be monitored.


🔎 Five-Day Weather Outlook for Moline, IL (July 28 – August 2):

  • Monday, July 28:
    🌦️ Chance of showers/thunderstorms 7 a.m.–1 p.m.
    High 92°F | Heat index up to 102°F | Light south winds
  • Tuesday, July 29:
    🌩️ 40% chance of storms after 1 a.m., increasing through day
    High 93°F | Low 72°F | Muggy conditions remain
  • Wednesday, July 30:
    ⛈️ 50% chance of thunderstorms
    High 82°F | Cooler, mostly cloudy
  • Thursday, July 31:
    🌤️ Mostly sunny, pleasant
    High 78°F | Low 58°F | Break from humidity
  • Friday, August 1 – Saturday, August 2:
    ☀️ Dry and mostly sunny both days
    Highs in upper 70s to near 80°F | Ideal start to August

⚠️ Next Update: Watch for storm chances increasing again Tuesday night.