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    • Today

      Jul 21

      94° /71°F
      Partly sunny, hot and humid
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
    • Sat

      Jul 22

      93° /74°
      A damaging afternoon t-storm
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Sun

      Jul 23

      92° /71°
      A heavy afternoon t-storm
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Mon

      Jul 24

      91° /67°
      A thunderstorm in spots
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Tue

      Jul 25

      83° /61°
      Mostly sunny and not as hot
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    94°Hi RealFeel® 107° Precipitation 20%
    Hot and humid with partial sunshine; high levels of ozone will lead to poor air quality
    • Winds from the
    • W 4 mph
    • Gusts: 8 mph
    • Max UV Index: 7 (High)
    • 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

    71°Lo RealFeel® 74° Precipitation 9%
    Partly cloudy and very humid
    • Winds from the
    • WNW 4 mph
    • Gusts: 7 mph
    • Max UV Index: N/A
    • Thunderstorms: 8%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Frederick Pollen Levels Jul 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 7/21/2016
    High 94° 89° N/A 90°
    Low 71° 68° N/A 59°

    Sunrise/Sunset

    • Sunrise: 6:00 AM
    • Sunset: 8:32 PM
    • Duration: 14:32 hr

    Moonrise/Moonset

    • Moonrise: 4:07 AM
    • Moonset: 6:56 PM
    • Duration: 14:49 hr
    Astronomy

    Fri. Pollen

    Fri. Dust & Dander

    Fri. Wind Maps