• Tonight

    Sep 1

    Lo 70°

    Partly cloudy, warm; fog late

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

    Sep 2

    90°Lo 70°

    Fog in the a.m.; partly sunny

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

    Sep 3

    86°Lo 67°

    Partly sunny and very warm

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

    Sep 4

    86°Lo 66°

    Sunny, very warm and humid

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

    Sep 5

    85°Lo 61°

    Lots of sun; warm and humid

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Temp (°F) 76° 79° 81° 82° 83° 85° 86° 85°
RealFeel® 80° 86° 91° 93° 95° 97° 99° 95°
Humidity 72% 69% 67% 62% 60% 61% 60% 62%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
5%
 
5%
 
5%
 
5%
 
4%
 
2%
 
2%
 
2%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 4 SSW 4 SSW 4 SSW 4 SW 5 WSW 4 SW 4 SW 4 SW
UV Index 2 3 4 5 5 5 4 3
Cloud Cover 45% 45% 45% 45% 45% 45% 45% 45%
Dew Point 66° 68° 69° 68° 68° 70° 71° 71°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F

Temperature History - Sep 3

more Historical Weather Data >
  Today Normal Record 9/3/2014
High 86° 79° N/A 83°
Low 67° 60° N/A 61°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:19 AM with 13:03 of sunlight, then sets at 7:22 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:41 PM with 14:27 of moolight, then sets at 1:08 PM

Prospect Heights Weather Report

Chicago: More Foggy Mornings in Store as Heat Holds on

September 1, 2015; 5:41 PM ET

Chicagoans can expect to begin September with a stretch of higher temperatures, increasing humidity and more foggy mornings. more >

Thu. Dust & Dander

Thu. Wind Maps