• Today

    Aug 21

    89°Lo 73°

    Humid with some sun

    Moderate ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
  • Fri

    Aug 22

    92°Lo 72°

    A thunderstorm in the area

    Moderate ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
    more
  • Sat

    Aug 23

    90°Lo 71°

    Hot and humid with some sun

    Moderate ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
    more
  • Sun

    Aug 24

    93°Lo 71°

    Periods of sun; hot, humid

    Moderate ragweed pollen levels
    • Precip
      17%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      46%
    more
  • Mon

    Aug 25

    91°Lo 67°

    A stray afternoon t-storm

    Ragweed Pollen Weather
    • Precip
      43%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      29%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
12pm
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  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Forecast
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Temp (°F) 82° 86° 87° 89° 89° 88° 86° 83°
RealFeel® 93° 98° 98° 98° 96° 94° 92° 89°
Humidity 77% 67% 63% 60% 60% 63% 69% 75%
   
  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Rain
 
47%
 
36%
 
20%
 
20%
 
20%
 
20%
 
20%
 
20%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Wind (mph) 6 S 6 S 7 SSE 7 S 8 S 7 SSW 7 SSW 6 SSW
UV Index 5 6 5 5 3 2 1 0
Cloud Cover 85% 67% 61% 62% 64% 65% 66% 65%
Dew Point 74° 74° 73° 74° 73° 74° 75° 75°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F

Temperature History - Aug 21

more Historical Weather Data >
  Today Normal Record 8/21/2013
High 89° 82° 101° (1947) 90°
Low 73° 62° 46° (1950) 58°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:10 AM with 13:36 of sunlight, then sets at 7:46 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:40 AM with 14:35 of moolight, then sets at 5:15 PM

Top Story

Ottawa Weather Report

Chicago: Threat of Thunderstorms Lingers After Heavy Rains Flood Wrigley Field

August 21, 2014; 8:51 AM ET

While there may be a mix of sunshine and clouds over the area, Chicago is facing more rounds of thunderstorms over the next several days. more >

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps