• Today

    Apr 17

    53°Lo 33°

    Cool with sunshine

    Very High indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Fri

    Apr 18

    54°Lo 39°

    Variable cloudiness

    High indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
  • Sat

    Apr 19

    66°Lo 38°

    Mostly sunny and warmer

    Moderate indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Sun

    Apr 20

    63°Lo 39°

    Periods of sun

    Moderate indoor dust & dander levels
    • Precip
      4%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      46%
    more
  • Mon

    Apr 21

    66°Lo 44°

    Partial sunshine

    Moderate indoor dust & dander levels
    • Precip
      11%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      45%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
4am
5am 6am 7am 8am 9am 10am 11am
  4am 5am 6am 7am 8am 9am 10am 11am
Forecast
Mostly Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Mostly Cloudy
Mostly Cloudy
Cloudy
Temp (°F) 33° 34° 33° 34° 37° 40° 42° 46°
RealFeel® 29° 30° 29° 30° 34° 38° 42° 47°
Humidity 78% 78% 78% 75% 71% 65% 57% 51%
   
  4am 5am 6am 7am 8am 9am 10am 11am
Rain
 
0%
 
0%
 
0%
 
0%
 
1%
 
1%
 
1%
 
1%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  4am 5am 6am 7am 8am 9am 10am 11am
Wind (mph) 5 NE 5 NE 5 NE 5 NE 5 NE 6 ENE 6 ENE 6 ENE
UV Index 0 0 0 0 0 1 2 3
Cloud Cover 83% 90% 92% 91% 90% 89% 89% 90%
Dew Point 27° 27° 27° 27° 29° 29° 28° 29°
Middle Grid line 50 F Middle Grid line 45 F Middle Grid line 40 F Middle Grid line 35 F Middle Grid line 30 F

Temperature History - Apr 18

more Historical Weather Data >
  Today Normal Record 4/18/2013
High 54° 62° 93° (1976) 61°
Low 39° 42° 30° (1928) 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:16 AM with 13:24 of sunlight, then sets at 7:40 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:24 PM with 10:07 of moolight, then sets at 9:31 AM

Top Story

Princeton Weather Report

Philly: Milder Weather to Come Easter Weekend

April 17, 2014; 1:10 PM ET

The return of milder air to Philadelphia will coincide with this coming Easter weekend. more >

Is it a Cold or the Flu?

Apr 7, 2014; 5:00 AM ET Symptoms caused by the common cold can often resemble those associated with the influenza virus, so how do you differentiate between the two?

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps