• Tonight

    Apr 20

    Lo 35°

    Clear and chilly

    Dust & Dander Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Mon

    Apr 21

    67°Lo 43°

    Mostly sunny

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

    Apr 22

    70°Lo 47°

    Showers late in the afternoon

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

    Apr 23

    59°Lo 36°

    Partly sunny; breezy, cooler

    Moderate indoor dust & dander levels
    • Precip
      8%
    • Wind
      Speed
      14 mph
    • Cloud
      Cover
      29%
    more
  • Thu

    Apr 24

    64°Lo 47°

    Sunny and breezy

    Moderate indoor dust & dander levels
    • Precip
      4%
    • Wind
      Speed
      12 mph
    • Cloud
      Cover
      5%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
6am
7am 8am 9am 10am 11am 12pm 1pm
  6am 7am 8am 9am 10am 11am 12pm 1pm
Forecast
Clear
Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 36° 37° 42° 48° 51° 56° 61° 62°
RealFeel® 35° 37° 44° 52° 59° 66° 72° 74°
Humidity 78% 74% 68% 60% 50% 41% 35% 32%
   
  6am 7am 8am 9am 10am 11am 12pm 1pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  6am 7am 8am 9am 10am 11am 12pm 1pm
Wind (mph) 3 NE 3 NE 3 NE 3 ENE 3 ESE 3 SE 3 SSE 3 S
UV Index 0 0 1 2 4 5 6 7
Cloud Cover 9% 9% 11% 11% 11% 11% 11% 11%
Dew Point 29° 29° 33° 34° 33° 33° 33° 32°
Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F Middle Grid line 40 F Middle Grid line 35 F

Temperature History - Apr 21

more Historical Weather Data >
  Today Normal Record 4/21/2013
High 67° 63° 87° (1985) 55°
Low 43° 43° 30° (1925) 34°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:12 AM with 13:32 of sunlight, then sets at 7:44 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:12 AM with 10:23 of moolight, then sets at 11:35 AM

Top Story

Princeton Weather Report

Philly: Temperatures to Stay on a Roller Coaster Ride

April 20, 2014; 8:51 PM ET

Temperatures will remain on the spring roller coaster ride this week in Philadelphia. more >

Is it a Cold or the Flu?

Apr 19, 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?

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps