• Today

    May 21

    81°Lo 67°

    Clouds and sunshine

    At Risk weather for asthma
    • Hi
      RealFeel
      85°
    • UV
      5 - Moderate
    • Air Qual.
      Moderate
  • Wed

    May 22

    86°Lo 68°

    Thundershower

    At Risk weather for asthma
    • Hi
      RealFeel
      90°
    • UV
      6 - High
    • Air Qual.
      Moderate
    more
  • Thu

    May 23

    81°Lo 59°

    A couple of thunderstorms

    At High Risk weather for asthma
    • Hi
      RealFeel
      84°
    • UV
      3 - Moderate
    • Air Qual.
      Moderate
    more
  • Fri

    May 24

    72°Lo 48°

    Not as warm

    Neutral weather for asthma
    • Hi
      RealFeel
      71°
    • UV
      6 - High
    • Cloud
      Cover
      73%
    more
  • Sat

    May 25

    70°Lo 45°

    Mostly sunny

    Beneficial weather for asthma
    • Hi
      RealFeel
      73°
    • UV
      7 - High
    • Cloud
      Cover
      20%
    more
Next Previous
Hi 81° RealFeel® 85° Precipitation 25%

Day

N

E

S

W

  • SSW 8 mph
  • Gusts: 13 mph

Warm and humid with times of sun and clouds

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 24%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 67° RealFeel® 64° Precipitation 55%

Night

N

E

S

W

  • S 8 mph
  • Gusts: 12 mph

An evening shower or thunderstorm; otherwise, partly cloudy, warm and humid

  • Max UV Index: N/A
  • Thunderstorms: 60%
  • Precipitation: 0.05 in
  • Rain: 0.05 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0.5 hrs
  • Hours of Rain: 0.5 hrs

Temperature History - May 21

more Historical Weather Data >
  Today Normal Record 5/21/2012
High 81° 76° 93° (1934) 71°
Low 67° 55° 37° (1992) 62°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:45 AM with 14:29 of sunlight, then sets at 8:14 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:26 PM with 11:19 of moolight, then sets at 3:45 AM

Top Story

Hartly Weather Report

Summerlike Tuesday in DC, Philadelphia, New York

May 21, 2013; 5:03 AM ET

Rising temperatures and humidity across the mid-Atlantic will have it feeling like the end of June. more >

Smoke Alert: The Hidden Dangers of E-Cigarettes

May 20, 2013; 5:00 AM ET E-cigarette manufacturers claim the devices can help a person quit smoking but have those claims ever been proven?

Tue. Air Quality

Tue. Asthma Risk

Tue. UV Index