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    Next 5 Days
    • Current Weather

      31° F
      Sunny
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Relative Humidity: 53%
      • Yesterday Temp: 51°
      • RealFeel: 15°
    • Today

      Nov 21

      35° Hi
      Colder with clouds and sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      } Day Details
    • Tomorrow

      Nov 22

      34° Hi
      Mostly sunny and chilly
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      } Day Details
    • Thursday

      Nov 23

      43° Hi
      Periods of clouds and sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      } Day Details
    Next 6 Hours
    • 4PM

      Nov 21

      32°
      Intermittent clouds
      Precip 0%
    • 5PM

      31°
      Partly cloudy
      Precip 0%
    • 6PM

      29°
      Partly cloudy
      Precip 0%
    • 7PM

      27°
      Clear
      Precip 0%
    • 8PM

      26°
      Clear
      Precip 0%
    • 9PM

      26°
      Clear
      Precip 0%

    Merrimac Pollen Levels Nov 21

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

      Low

    • Ragweed Pollen

      Low

    • Mold

      Low

    • Grass Pollen

      Low

    Some of the best traveling conditions through Wednesday will occur across the Southwest and central U.S.
    Thanksgiving travel: Storms drench Florida; Spotty snow for Midwest

    Allergies Live Feed

    Tue. Pollen

    Tue. Dust & Dander

    Tue. Wind Maps