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Ottawa, Illinois Weather

Ottawa, Illinois — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery for Ottawa, LaSalle 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 Ottawa — sourced from the FAA Aviation Weather Center. Nearest reporting station: locating…

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NWS Extended Forecast
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📡 Precipitation Radar

Live animated radar for Ottawa 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 Ottawa, Illinois

Ottawa, Illinois, unfolds across a landscape where the Illinois and Fox Rivers converge, their waters reflecting the broad, open skies of the Prairie State. It lies 34.5 miles south-west of Oswego, IL (from Oswego, IL: bearing 228°T), and is situated 8.1 miles south-east of LaSalle. Rolling hills, softened by agricultural fields and stands of sturdy oak and maple, give way to the flatter, fertile plains that have long defined this region. The air here carries a distinct crispness, especially in the autumn, a tangible reminder of the vast agricultural expanse stretching in every direction. Even in the midst of its settled streets, the presence of the wide rivers and the whispering prairie grasses feels ever-present, shaping the very character of Ottawa. The history of Ottawa is deeply entwined with its waterways, serving as a vital hub for commerce and transportation since its founding. The Illinois and Michigan Canal, a significant engineering feat of its time, brought prosperity and people to Ottawa, fostering an economy built on trade and industry. Evidence of this past can be seen in the sturdy brick buildings that line its historic downtown, a silent testament to the robust trade that once flowed through its port. Today, agriculture remains a cornerstone, with vast fields of corn and soybeans painting the surrounding countryside, while tourism draws visitors to its riverfront parks and the nearby Starved Rock State Park, a natural wonder that has captivated imaginations for generations.

LocationOttawa, LaSalle County, Illinois
Coordinates41.345589°N, 88.842577°W
TimezoneCentral Time (America/Chicago)
ZIP Code(s)61350
Area Code815
Page generatedJune 2026
Weather dataOpen-Meteo (open-source), NOAA National Weather Service