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    • Early AM

      Jun 20

      67° Lo
      Partly to mostly cloudy
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Today

      Jun 20

      85° /68°
      A p.m. thunderstorm or two
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Thu

      Jun 21

      82° /67°F
      Some sun; humid
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
    • Fri

      Jun 22

      76° /67°
      Mostly cloudy, a shower
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Sat

      Jun 23

      84° /68°
      A shower and t-storm around
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    82°Hi RealFeel® 89° Precipitation 25%
    Some sun; humid
    • Winds from the
    • N 6 mph
    • Gusts: 8 mph
    • Max UV Index: 11 (Extreme)
    • Thunderstorms: 24%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    67°Lo RealFeel® 69° Precipitation 25%
    Patchy clouds
    • Winds from the
    • ENE 4 mph
    • Gusts: 6 mph
    • Max UV Index: N/A
    • Thunderstorms: 18%
    • 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 Jun 21

    • 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 6/21/2017
    High 82° 83° N/A 88°
    Low 67° 66° N/A 63°

    Sunrise/Sunset

    • Sunrise: 5:43 AM
    • Sunset: 8:38 PM
    • Duration: 14:55 hr

    Moonrise/Moonset

    • Moonrise: 2:25 PM
    • Moonset: 2:25 AM
    • Duration: 12:00 hr
    Astronomy

    Thu. Pollen

    Thu. Dust & Dander

    Thu. Wind Maps