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    • Tonight

      May 23

      65° Lo F
      A shower and t-storm around
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: High
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
    • Thu

      May 24

      87° /68°
      Partly sunny, a thunderstorm
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: High
      More
    • Fri

      May 25

      88° /67°
      A strong afternoon t-storm
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: High
      More
    • Sat

      May 26

      93° /70°
      A p.m. shower or thunderstorm
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More
    • Sun

      May 27

      94° /70°
      Clouds and sun; summerlike
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    90°Hi RealFeel® 98° Precipitation 25%
    Sunshine mixing with some clouds; humid
    • Winds from the
    • SSE 7 mph
    • Gusts: 22 mph
    • Max UV Index: 11 (Extreme)
    • Thunderstorms: 24%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    65°Lo RealFeel® 63° Precipitation 55%
    A couple of showers and a thunderstorm this evening; otherwise, partly cloudy; mild
    • Winds from the
    • SSE 7 mph
    • Gusts: 17 mph
    • Max UV Index: N/A
    • Thunderstorms: 40%
    • Precipitation: 0.15 in
    • Rain: 0.15 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 1.5 hrs
    • Hours of Rain: 1.5 hrs

    Ottawa Pollen Levels May 23

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

      Moderate

    • Ragweed Pollen

      Low

    • Mold

      High

    • Grass Pollen

      High

    Temperature History

    more Historical Weather Data >
      Today Normal Record 5/23/2017
    High 90° 77° 94° (1939) 68°
    Low 65° 56° 38° (1917) 53°

    Sunrise/Sunset

    • Sunrise: 6:03 AM
    • Sunset: 8:33 PM
    • Duration: 14:30 hr

    Moonrise/Moonset

    • Moonrise: 2:40 PM
    • Moonset: 3:34 AM
    • Duration: 12:54 hr
    Astronomy

    Wed. Pollen

    Wed. Dust & Dander

    Wed. Wind Maps