• Tonight

    Aug 21

    Lo 68°

    A heavy evening thunderstorm

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
  • Fri

    Aug 22

    86°Lo 68°

    A couple of thunderstorms

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

    Aug 23

    79°Lo 64°

    A shower or two; not as warm

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

    Aug 24

    80°Lo 60°

    Partly sunny

    Low ragweed pollen levels
    • Precip
      11%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      51%
    more
  • Mon

    Aug 25

    81°Lo 60°

    Partly sunny

    Ragweed Pollen Weather
    • Precip
      6%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      26%
    more
Next Previous
Hi 88° RealFeel® 97° Precipitation 55%

Day

N

E

S

W

  • W 3 mph
  • Gusts: 12 mph

Humid with clouds and breaks of sun; a couple of showers and a thunderstorm this afternoon

  • Max UV Index: 6 (High)
  • Thunderstorms: 60%
  • Precipitation: 0.04 in
  • Rain: 0.04 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs
Lo 68° RealFeel® 68° Precipitation 55%

Night

N

E

S

W

  • N 2 mph
  • Gusts: 5 mph

Rather cloudy; a shower or heavy thunderstorm this evening followed by a shower in spots late

  • Max UV Index: N/A
  • Thunderstorms: 60%
  • Precipitation: 0.04 in
  • Rain: 0.04 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs

Greenbelt Pollen Levels - August 21

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Aug 21

more Historical Weather Data >
  Today Normal Record 8/21/2013
High 88° 83° N/A 89°
Low 68° 65° N/A 68°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:26 AM with 13:29 of sunlight, then sets at 7:55 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:56 AM with 14:25 of moolight, then sets at 5:21 PM

Top Story

Greenbelt Weather Report

DC: Downpour, Flooding Risk to Increase

August 21, 2014; 12:10 PM ET

A wedge of dry air will slowly erode at midweek and will allow drenching showers and thunderstorms to survive the trip into Washington, D.C., from the Midwest. more >

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps