• Today

    Sep 3

    91°Lo 69°

    Hot and humid with some sun

    Beneficial weather for asthma
    • Hi
      RealFeel
      98°
    • UV
      5 - High
    • Air Qual.
      Good
  • Fri

    Sep 4

    90°Lo 69°

    A thunderstorm in spots

    Neutral weather for asthma
    • Hi
      RealFeel
      101°
    • UV
      4 - Moderate
    • Air Qual.
      Good
    more
  • Sat

    Sep 5

    90°Lo 69°

    Partly sunny and very warm

    Beneficial weather for asthma
    • Hi
      RealFeel
      101°
    • UV
      5 - High
    • Air Qual.
      Good
    more
  • Sun

    Sep 6

    92°Lo 73°

    Partly sunny and hot

    Beneficial weather for asthma
    • Hi
      RealFeel
      97°
    • UV
      5 - High
    • Air Qual.
      Good
    more
  • Mon

    Sep 7

    86°Lo 67°

    Rather cloudy with a t-storm

    Neutral weather for asthma
    • Hi
      RealFeel
      92°
    • UV
      4 - Moderate
    • Air Qual.
      Good
    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 Cloudy
Partly Cloudy
Temp (°F) 77° 81° 84° 86° 88° 90° 91° 90°
RealFeel® 82° 89° 94° 96° 97° 97° 98° 96°
Humidity 77% 71% 66% 59% 54% 51% 52% 52%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
1%
 
1%
 
1%
 
1%
 
1%
 
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) 5 SW 6 SW 7 SW 7 SW 8 SW 8 WSW 8 WSW 8 WSW
UV Index 2 3 4 5 6 5 4 3
Cloud Cover 37% 46% 46% 46% 46% 46% 56% 65%
Dew Point 69° 71° 72° 70° 70° 69° 71° 71°
Middle Grid line 95 F 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 91° 81° 98° (1925) 85°
Low 69° 59° 42° (1974) 63°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:23 AM with 13:02 of sunlight, then sets at 7:25 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:46 PM with 14:24 of moolight, then sets at 1:10 PM

Ottawa Weather Report

Chicago: Sun, Humidity to Grip Region Before Stormy Labor Day

September 3, 2015; 5:10 AM ET

As the Labor Day weekend shapes up, Chicago residents will see mostly sunny and humid conditions until the holiday itself on Monday. more >

The Dangers of Bus Travel

Dec 10, 2012; 5:00 AM ET While bus transportation is one of the most affordable, it is important to know which motor coach companies rank highest in safety.

Thu. Air Quality

Thu. Asthma Risk

Thu. UV Index