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    • Today

      Sep 28

      81° /44°
      Plenty of 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: Low
      More
    • Thu

      Sep 29

      80° /50°F
      Sun and some clouds
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
    • Fri

      Sep 30

      76° /50°
      Rather cloudy
      • High
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: High
      • Tree Pollen: Low
      More
    • Sat

      Oct 1

      78° /47°
      An afternoon shower or two
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Sun

      Oct 2

      78° /42°
      Mostly sunny and pleasant
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    80°Hi RealFeel® 85° Precipitation 5%
    Sun and some clouds
    • N 4 mph
    • Gusts: 6 mph
    • Max UV Index: 5 (Moderate)
    • Thunderstorms: 9%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    50°Lo RealFeel® 51° Precipitation 9%
    Becoming partly cloudy
    • W 4 mph
    • Gusts: 6 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

    Boulder Pollen Levels Sep 29

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

      Low

    • Ragweed Pollen

      Low

    • Mold

      Low

    • Grass Pollen

      Low

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/29/2015
    High 80° 72° N/A 77°
    Low 50° 43° N/A 55°

    Sunrise/Sunset

    • Sunrise: 6:56 AM
    • Sunset: 6:45 PM
    • Duration: 11:49 hr

    Moonrise/Moonset

    • Moonrise: 5:34 AM
    • Moonset: 6:20 PM
    • Duration: 12:46 hr
    Astronomy

    Thu. Pollen

    Thu. Dust & Dander

    Thu. Wind Maps