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    • Today

      Aug 16

      87° /70°F
      Periods of clouds and sun
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Low
    • Thu

      Aug 17

      85° /73°
      Very humid
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Fri

      Aug 18

      88° /70°
      Showers and a heavier t-storm
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Sat

      Aug 19

      86° /67°
      Periods of clouds and sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Sun

      Aug 20

      86° /67°
      Mostly sunny
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    87°Hi RealFeel® 100° Precipitation 25%
    Humid this morning; otherwise, periods of clouds and sun
    • Winds from the
    • NW 4 mph
    • Gusts: 8 mph
    • Max UV Index: 10 (Extreme)
    • Thunderstorms: 2%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    70°Lo RealFeel® 73° Precipitation 7%
    Mainly clear and humid
    • Winds from the
    • E 4 mph
    • Gusts: 6 mph
    • Max UV Index: N/A
    • Thunderstorms: 2%
    • 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 Aug 16

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

      Low

    • Ragweed Pollen

      Low

    • Mold

      Low

    • Grass Pollen

      Moderate

    Temperature History

    more Historical Weather Data >
      Today Normal Record 8/16/2016
    High 87° 83° N/A 93°
    Low 70° 67° N/A 72°

    Sunrise/Sunset

    • Sunrise: 6:22 AM
    • Sunset: 8:03 PM
    • Duration: 13:41 hr

    Moonrise/Moonset

    • Moonrise: 1:06 AM
    • Moonset: 3:36 PM
    • Duration: 14:30 hr
    Astronomy

    Wed. Pollen

    Wed. Dust & Dander

    Wed. Wind Maps