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    • Tonight

      Oct 17

      39° Lo F
      Clear
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
    • Wed

      Oct 18

      70° /41°
      Clear and pleasant
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Thu

      Oct 19

      73° /49°
      Mostly clear and pleasant
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Fri

      Oct 20

      74° /48°
      Mainly clear and pleasant
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Sat

      Oct 21

      74° /53°
      Partly cloudy and pleasant
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More

    Day

    61°Hi RealFeel® 67° Precipitation 1%
    Clear and pleasant
    • Winds from the
    • NNW 5 mph
    • Gusts: 9 mph
    • Max UV Index: 4 (Moderate)
    • 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

    39°Lo RealFeel® 40° Precipitation 1%
    Clear
    • Winds from the
    • WSW 4 mph
    • Gusts: 5 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

    Rockville Pollen Levels Oct 17

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

      Low

    • Ragweed Pollen

      Low

    • Mold

      High

    • Grass Pollen

      Low

    Temperature History

    more Historical Weather Data >
      Today Normal Record 10/17/2016
    High 61° 64° N/A 81°
    Low 39° 47° N/A 54°

    Sunrise/Sunset

    • Sunrise: 7:20 AM
    • Sunset: 6:27 PM
    • Duration: 11:07 hr

    Moonrise/Moonset

    • Moonrise: 4:58 AM
    • Moonset: 5:42 PM
    • Duration: 12:44 hr
    Astronomy

    Tue. Pollen

    Tue. Dust & Dander

    Tue. Wind Maps