• Today

    Aug 31

    85°Lo 68°

    Fog in the a.m.; mostly sunny

    Poor for skiing
    • Rain
      0 in
    • Precip
      3%
    • Hours of Precip
      0
    more
  • Tue

    Sep 1

    89°Lo 70°

    Fog in the a.m.; mostly sunny

    Poor for skiing
    • Rain
      0 in
    • Precip
      9%
    • Hours of Precip
      0
  • Wed

    Sep 2

    91°Lo 68°

    Partly sunny and hot

    Poor for skiing
    • Rain
      0 in
    • Precip
      9%
    • Hours of Precip
      0
    more
  • Thu

    Sep 3

    88°Lo 67°

    Partly sunny and very warm

    Poor for skiing
    • Rain
      0 in
    • Precip
      6%
    • Hours of Precip
      0
    more
  • Fri

    Sep 4

    89°Lo 67°

    Sunny and very warm

    Poor for skiing
    • Rain
      0 in
    • Precip
      7%
    • Hours of Precip
      0
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Fog
Fog
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 77° 81° 84° 86° 88° 89° 89° 89°
RealFeel® 81° 87° 93° 94° 95° 95° 96° 94°
Humidity 74% 67% 62% 55% 52% 50% 52% 51%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
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%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 6 SW 7 SW 7 SW 8 SW 8 SW 8 SW 8 SW 9 SW
UV Index 2 3 5 6 6 6 5 3
Cloud Cover 11% 11% 11% 11% 11% 11% 11% 11%
Dew Point 68° 69° 70° 68° 68° 68° 70° 69°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F

Temperature History - Sep 1

more Historical Weather Data >
  Today Normal Record 9/1/2014
High 89° 80° N/A 83°
Low 70° 60° N/A 70°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:17 AM with 13:09 of sunlight, then sets at 7:26 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:19 PM with 13:35 of moolight, then sets at 10:54 AM

Mount Prospect Weather Report

Chicago: Heat, Humidity to Build Through Week

August 31, 2015; 3:00 AM ET

A turn to warmer conditions is in store for the Chicago area heading into the new week. more >

Tourism of Doom: Traveling to Endangered Places

Aug 30, 2012; 5:00 AM ET If you're longing to ski the Alps or swim in the Great Barrier Reef, you may be running out of time. A changing climate may beat you to the punch line. Valerie Smock has more.

48 Hour Precipitation Forecast

Tue. Ski Weather