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    • Today

      Apr 19

      46° /23°
      Clouds breaking for some sun
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More
    • Fri

      Apr 20

      51° /34°F
      Fog in the a.m.; partly sunny
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
    • Sat

      Apr 21

      53° /34°
      Cool with clouds and sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More
    • Sun

      Apr 22

      60° /37°
      Intervals of clouds and sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More
    • Mon

      Apr 23

      64° /42°
      Mostly sunny
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More

    Day

    51°Hi RealFeel® 58° Precipitation 3%
    Patchy morning fog; otherwise, partly sunny and cool
    • Winds from the
    • SE 5 mph
    • Gusts: 7 mph
    • Max UV Index: 7 (High)
    • Thunderstorms: 0%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    34°Lo RealFeel® 34° Precipitation 17%
    Overcast
    • Winds from the
    • E 4 mph
    • Gusts: 6 mph
    • Max UV Index: N/A
    • Thunderstorms: 0%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Decorah Pollen Levels Apr 20

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

      Moderate

    • Ragweed Pollen

      Low

    • Mold

      Low

    • Grass Pollen

      Low

    Temperature History

    more Historical Weather Data >
      Today Normal Record 4/20/2017
    High 51° 64° N/A 52°
    Low 34° 38° N/A 43°

    Sunrise/Sunset

    • Sunrise: 6:17 AM
    • Sunset: 7:56 PM
    • Duration: 13:39 hr

    Moonrise/Moonset

    • Moonrise: 9:54 AM
    • Moonset: 1:11 AM
    • Duration: 15:17 hr
    Astronomy

    Fri. Pollen

    Fri. Dust & Dander

    Fri. Wind Maps