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O'Fallon, Missouri Weather

O'Fallon, Missouri — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery for O'Fallon, St. Charles County.

🌡️ Current Conditions
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24-Hour Forecast
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Current Conditions Detail
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7-Day Forecast
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✈️ Aviation Weather

Flight conditions near O'Fallon — sourced from the FAA Aviation Weather Center. Nearest reporting station: locating…

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🌿 Air Quality
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NWS Extended Forecast
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📡 Precipitation Radar

Live animated radar for O'Fallon and surroundings — RainViewer.

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🛰️ Satellite Imagery

NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.

NOAA GOES-16 CONUS GEOCOLOR satellite animated loop
🛰️ GEOCOLOR loop 🌡️ Infrared (IR) 🌀 NHC Hurricane Satellite 🔗 NOAA Full Viewer

Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload

🌙 Astronomy
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About O'Fallon, Missouri

O'Fallon unfolds across a landscape of gentle, rolling terrain, where the fertile earth, once a verdant carpet of prairie grasses, now yields to a carefully cultivated suburban sprawl. The air here, especially after a summer rain, carries a clean, sweet scent, a subtle perfume of mown lawns and distant cornfields. Sunlight, often mellow and diffused through the humid Missouri air, casts a soft glow on the rows of homes and the spreading branches of oak and maple trees that line its streets. The horizon, though softened by development, still hints at the vastness of the American heartland, a subtle reminder of the open skies that once dominated this vista. This corner of St. Charles County owes its character to a history intertwined with agricultural roots and a forward-looking embrace of modern growth. Early settlers, drawn by the rich soil and proximity to vital waterways, laid the groundwork for a community that has steadily expanded, becoming a vibrant economic hub. The legacy of farming is still discernible in the occasional weathered barn or the names of streets that echo bygone fields, yet O'Fallon's present thrives on a diverse economy, attracting businesses and families alike. Its accessibility, a key advantage, has fostered a dynamic spirit, a place where the quiet hum of daily life is punctuated by the energetic pulse of a community looking towards the future, a place that cherishes its past while building its tomorrow.

LocationO'Fallon, St. Charles County, Missouri
Coordinates38.810608°N, 90.699848°W
TimezoneCentral Time (America/Chicago)
Area Code314, 417, 557, 573, 636, 660, 816, 975
Page generatedJune 2026
Weather dataOpen-Meteo (open-source), NOAA National Weather Service