• Today

    Apr 21

    66°Lo 44°

    Partly sunny and breezy

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Wed

    Apr 22

    65°Lo 38°

    Rather cloudy, p.m. showers

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
  • Thu

    Apr 23

    55°Lo 37°

    Cooler with clouds and sun

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Fri

    Apr 24

    57°Lo 39°

    Breezy with periods of sun

    Low ragweed pollen levels
    • Precip
      10%
    • Wind
      Speed
      15 mph
    • Cloud
      Cover
      54%
    more
  • Sat

    Apr 25

    63°Lo 42°

    Mostly cloudy

    Ragweed Pollen Weather
    • Precip
      12%
    • Wind
      Speed
      13 mph
    • Cloud
      Cover
      76%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
2am
3am 4am 5am 6am 7am 8am 9am
  2am 3am 4am 5am 6am 7am 8am 9am
Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Sunny
Cloudy
Mostly Cloudy
Temp (°F) 48° 46° 45° 44° 45° 47° 50° 53°
RealFeel® 48° 46° 45° 44° 44° 45° 46° 50°
Humidity 66% 71% 73% 80% 77% 72% 69% 63%
   
  2am 3am 4am 5am 6am 7am 8am 9am
Rain
 
2%
 
2%
 
2%
 
2%
 
2%
 
4%
 
7%
 
7%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  2am 3am 4am 5am 6am 7am 8am 9am
Wind (mph) 5 SW 5 SSW 4 SSW 4 SSW 5 SSW 6 SSW 8 SSW 10 SSW
UV Index 0 0 0 0 0 0 1 1
Cloud Cover 10% 10% 10% 10% 10% 10% 90% 86%
Dew Point 37° 37° 37° 38° 38° 38° 40° 41°
Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F Middle Grid line 40 F

Temperature History - Apr 22

more Historical Weather Data >
  Today Normal Record 4/22/2014
High 65° 64° 89° (1985) 75°
Low 38° 43° 30° (1922) 45°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:10 AM with 13:35 of sunlight, then sets at 7:45 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:18 AM with 14:40 of moolight, then sets at 11:58 PM

Princeton Weather Report

Philadelphia: Cooler Air to Sweep Away Warmth This Week

April 21, 2015; 6:04 AM ET

Cooler air will push into the Philadelphia area during the middle and latter part of the week. more >

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps