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    Next 5 Days
    • Current Weather

      37° F
      Partly cloudy
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Relative Humidity: 83%
      • Yesterday Temp: 36°
      • RealFeel: 38°
    • Early AM

      Apr 25

      39° Lo
      Mainly clear
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      } Day Details
    • Today

      Apr 25

      69° Hi
      Pleasantly warm with sunshine
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      } Day Details
    • Tomorrow

      Apr 26

      76° Hi
      Sunny and pleasantly warm
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      } Day Details
    Next 6 Hours
    • 4AM

      Apr 25

      39°
      Partly cloudy
      Precip 0%
    • 5AM

      40°
      Mostly clear
      Precip 0%
    • 6AM

      42°
      Mostly sunny
      Precip 0%
    • 7AM

      46°
      Mostly sunny
      Precip 0%
    • 8AM

      51°
      Sunny
      Precip 0%
    • 9AM

      56°
      Sunny
      Precip 0%

    Clark Fork Pollen Levels Apr 25

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

      Moderate

    • Ragweed Pollen

      Low

    • Mold

      Low

    • Grass Pollen

      Low

    Every year, thousands of runners prepare for big races such as the Boston, New York and Chicago marathons. To prepare properly, runners have to know how temperatures affect their running performance.
    How does temperature affect your running?

    Allergies Live Feed

    Wed. Pollen

    Wed. Dust & Dander

    Wed. Wind Maps