• Today

    Feb 27

    22°Lo 12°

    Some sun, then clouds

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
  • Sat

    Feb 28

    30°Lo 29°

    A little afternoon snow

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Sun

    Mar 1

    39°Lo 25°

    Snow and rain in the p.m.

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Mon

    Mar 2

    44°Lo 42°

    Mostly cloudy, afternoon rain

    Low ragweed pollen levels
    • Precip
      65%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      94%
    more
  • Tue

    Mar 3

    59°Lo 19°

    Breezy and warmer with rain

    Ragweed Pollen Weather
    • Precip
      67%
    • Wind
      Speed
      18 mph
    • Cloud
      Cover
      97%
    more
Next Previous
Hi 22° RealFeel® 25° Precipitation 13%

Day

N

E

S

W

  • NE 5 mph
  • Gusts: 9 mph

Some sunshine giving way to clouds

  • 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
Lo 12° RealFeel® 6° Precipitation 23%

Night

N

E

S

W

  • E 6 mph
  • Gusts: 8 mph

Partly cloudy and frigid

  • Max UV Index: N/A
  • Thunderstorms: 1%
  • 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 - February 27

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Grass

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Feb 27

more Historical Weather Data >
  Today Normal Record 2/27/2014
High 22° 47° N/A 31°
Low 12° 24° N/A 19°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:51 AM with 11:17 of sunlight, then sets at 6:08 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:02 PM with 14:25 of moolight, then sets at 3:27 AM

Making a Forecast: The Sixth Sense

Feb 16, 2015; 5:00 AM ET What steps go into making a forecast?

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps