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    • Today

      Aug 18

      89° /65°F
      An afternoon thunderstorm
      • 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
    • Sat

      Aug 19

      92° /69°
      Sunny and beautiful
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Sun

      Aug 20

      91° /73°
      Mostly sunny and humid
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Mon

      Aug 21

      88° /74°
      An afternoon thunderstorm
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Tue

      Aug 22

      86° /64°
      Thundershower
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    89°Hi RealFeel® 99° Precipitation 55%
    Partly sunny with a shower or thunderstorm around this afternoon
    • Winds from the
    • SSW 7 mph
    • Gusts: 14 mph
    • Max UV Index: 10 (Extreme)
    • Thunderstorms: 60%
    • Precipitation: 0.05 in
    • Rain: 0.05 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0.5 hrs
    • Hours of Rain: 0.5 hrs

    Night

    65°Lo RealFeel® 65° Precipitation 25%
    Partly cloudy
    • Winds from the
    • SSW 5 mph
    • Gusts: 8 mph
    • Max UV Index: N/A
    • Thunderstorms: 24%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Ottawa Pollen Levels Aug 18

    • Extreme
    • Very High
    • High
    • Moderate
    • Low
    • Tree Pollen

      Low

    • Ragweed Pollen

      Moderate

    • Mold

      Low

    • Grass Pollen

      Low

    Temperature History

    more Historical Weather Data >
      Today Normal Record 8/18/2016
    High 89° 88° 109° (1936) 91°
    Low 65° 66° 47° (2012) 67°

    Sunrise/Sunset

    • Sunrise: 6:38 AM
    • Sunset: 8:12 PM
    • Duration: 13:34 hr

    Moonrise/Moonset

    • Moonrise: 3:10 AM
    • Moonset: 5:53 PM
    • Duration: 14:43 hr
    Astronomy

    Fri. Pollen

    Fri. Dust & Dander

    Fri. Wind Maps