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    • Tonight

      Aug 23

      58° Lo F
      A thunderstorm in spots early
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Low
      • Ragweed Pollen: High
      • Tree Pollen: Low
    • Thu

      Aug 24

      82° /59°
      Clouds and sunshine
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Fri

      Aug 25

      87° /59°
      Periods of sun and clouds
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Sat

      Aug 26

      86° /59°
      Partial sunshine
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Sun

      Aug 27

      84° /56°
      Partly sunny and nice
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More

    Day

    86°Hi RealFeel® 99° Precipitation 65%
    Some sun, then increasing clouds with periods of rain and a thunderstorm this afternoon
    • Winds from the
    • NW 7 mph
    • Gusts: 39 mph
    • Max UV Index: 13 (Extreme)
    • Thunderstorms: 47%
    • Precipitation: 0.1 in
    • Rain: 0.1 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 2 hrs
    • Hours of Rain: 2 hrs

    Night

    58°Lo RealFeel® 57° Precipitation 40%
    A shower or thunderstorm in spots this evening; otherwise, partly cloudy
    • Winds from the
    • WSW 8 mph
    • Gusts: 32 mph
    • Max UV Index: N/A
    • Thunderstorms: 40%
    • Precipitation: 0.04 in
    • Rain: 0.04 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0.5 hrs
    • Hours of Rain: 0.5 hrs

    Boulder Pollen Levels Aug 23

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

      Low

    • Ragweed Pollen

      High

    • Mold

      Low

    • Grass Pollen

      Low

    Temperature History

    more Historical Weather Data >
      Today Normal Record 8/23/2016
    High 86° 85° N/A 86°
    Low 58° 55° N/A 64°

    Sunrise/Sunset

    • Sunrise: 6:20 AM
    • Sunset: 7:47 PM
    • Duration: 13:27 hr

    Moonrise/Moonset

    • Moonrise: 8:19 AM
    • Moonset: 9:08 PM
    • Duration: 12:49 hr
    Astronomy

    Wed. Pollen

    Wed. Dust & Dander

    Wed. Wind Maps