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    • Today

      Sep 26

      70° /46°F
      Sunny and breezy
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
    • Tue

      Sep 27

      67° /49°
      Mostly sunny and breezy
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Wed

      Sep 28

      63° /51°
      Periods of sun with a shower
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      68° /53°
      Partly sunny with a shower
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Fri

      Sep 30

      70° /51°
      Clearing and spotty showers
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    Monday
    10pm
    11pm
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    4am
    5am
    Forecast Clear Clear Mostly Clear Mostly Clear Clear Clear Clear Clear
    Temp (°F) 55° 53° 53° 52° 51° 50° 49° 48°
    RealFeel® 54° 52° 51° 50° 49° 48° 47° 46°
    Wind (mph) 5 WSW 6 WSW 6 WSW 6 WSW 6 WSW 6 WSW 6 WSW 6 WSW
    precip
    10pm
    11pm
    12am
    1am
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    3am
    4am
    5am
    Rain
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Snow
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Ice
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    SKY
    10pm
    11pm
    12am
    1am
    2am
    3am
    4am
    5am
    UV Index 0 0 0 0 0 0 0 0
    Cloud Cover 6% 8% 10% 10% 7% 3% 0% 0%
    Humidity 71% 73% 78% 79% 79% 82% 84% 86%
    Dew Point 45° 45° 46° 46° 45° 45° 44° 44°
    Temp °F
    10pm
    11pm
    12am
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    2am
    3am
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    60° 55° 50° 45°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/26/2015
    High 70° 73° 91° (1999) 81°
    Low 46° 49° 25° (1928) 56°

    Sunrise/Sunset

    • Sunrise: 6:48 AM
    • Sunset: 6:44 PM
    • Duration: 11:56 hr

    Moonrise/Moonset

    • Moonrise: 2:24 AM
    • Moonset: 4:35 PM
    • Duration: 14:11 hr
    Astronomy

    Ottawa Weather Report

    Chilly winds to howl across Great Lakes early this week

    September 26, 2016; 3:03 AM ET

    Gusty winds will accompany a push of chilly air across the Great Lakes through Tuesday. More >

    Mon. Pollen

    Mon. Dust & Dander

    Mon. Wind Maps