• Today

    Jul 31

    88°Lo 66°

    Sunny, warm and less humid

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      3 - Moderate
  • Sat

    Aug 1

    88°Lo 63°

    Warm with sun, some clouds

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      3 - Moderate
    more
  • Sun

    Aug 2

    88°Lo 68°

    Mostly sunny

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      3 - Moderate
    more
  • Mon

    Aug 3

    92°Lo 71°

    Partly sunny and hot

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

    Aug 4

    87°Lo 63°

    A thunderstorm in spots

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 88° RealFeel® 92° Precipitation 2%

Day

N

E

S

W

  • NW 7 mph
  • Gusts: 10 mph

Very warm and less humid with plenty of sun

  • Max UV Index: 7 (High)
  • Thunderstorms: 2%
  • 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® 64° Precipitation 10%

Night

N

E

S

W

  • WSW 5 mph
  • Gusts: 8 mph

Clear

  • Max UV Index: N/A
  • Thunderstorms: 1%
  • 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 - July 31

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

    Low

  • Ragweed Pollen

    Low

  • Tree Pollen

    Moderate

  • Mold Pollen

    Low

Temperature History - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2014
High 88° 85° 99° (1954) 84°
Low 66° 66° 56° (2001) 59°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:55 AM with 14:20 of sunlight, then sets at 8:15 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:15 PM with 11:04 of moolight, then sets at 7:19 AM

Princeton Weather Report

Philadelphia: Heat to Linger, Humidity to Ease Friday, This Weekend

July 31, 2015; 4:32 AM ET

Following the steambath of this week, Philadelphia will catch a break from high humidity Friday and this weekend but not sizzling temperatures. more >

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps