• Early AM

    Aug 31

    Lo 68°

    Mostly cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Today

    Aug 31

    90°Lo 67°

    Very warm with periods of sun

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Tue

    Sep 1

    91°Lo 66°

    Hot with plenty of sun

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
  • Wed

    Sep 2

    92°Lo 68°

    Partly sunny, hot and humid

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Thu

    Sep 3

    92°Lo 70°

    A shower or t-storm in spots

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 91° RealFeel® 98° Precipitation 9%

Day

N

E

S

W

  • NNW 4 mph
  • Gusts: 6 mph

Hot with plenty of sun

  • Max UV Index: 6 (High)
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 66° RealFeel® 67° Precipitation 9%

Night

N

E

S

W

  • N 2 mph
  • Gusts: 4 mph

Mostly clear and humid

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

Princeton Pollen Levels - September 1

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

    Low

  • Ragweed Pollen

    Low

  • Tree Pollen

    Low

  • Mold Pollen

    Low

Temperature History - Sep 1

more Historical Weather Data >
  Today Normal Record 9/1/2014
High 91° 81° 97° (2010) 87°
Low 66° 62° 50° (1986) 72°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:26 AM with 13:05 of sunlight, then sets at 7:31 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:26 PM with 13:30 of moolight, then sets at 10:56 AM

Princeton Weather Report

Philly: Sizzling Heat Wave to Start September

August 31, 2015; 1:15 AM ET

A push of summery heat and humidity will arrive in Philadelphia this week as September begins more >

Tue. Pollen

Tue. Dust & Dander

Tue. Wind Maps