• Today

    Sep 17

    71°Lo 47°

    Mostly sunny and pleasant

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

    Sep 18

    72°Lo 49°

    Sunny and pleasant

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

    Sep 19

    76°Lo 60°

    Pleasant with periods of sun

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

    Sep 20

    81°Lo 61°

    A couple of p.m. t-storms

    Low ragweed pollen levels
    • Precip
      66%
    • Wind
      Speed
      12 mph
    • Cloud
      Cover
      77%
    more
  • Sun

    Sep 21

    77°Lo 54°

    A morning shower possible

    Ragweed Pollen Weather
    • Precip
      30%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      51%
    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
Sunny
Sunny
Sunny
Sunny
Sunny
Sunny
Sunny
Mostly Sunny
Temp (°F) 56° 62° 66° 67° 69° 71° 72° 72°
RealFeel® 57° 65° 69° 72° 74° 75° 75° 72°
Humidity 77% 69% 63% 58% 54% 51% 49% 49%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
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0%
 
0%
Ice
 
0%
 
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  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 4 ENE 4 ENE 4 ENE 4 ENE 5 E 5 ENE 5 ENE 6 ENE
UV Index 1 3 4 5 5 5 4 3
Cloud Cover 0% 1% 2% 3% 5% 7% 8% 10%
Dew Point 49° 52° 53° 52° 52° 52° 52° 52°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F

Temperature History - Sep 18

more Historical Weather Data >
  Today Normal Record 9/18/2013
High 72° 76° 99° (1965) 84°
Low 49° 53° 34° (1929) 58°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:38 AM with 12:22 of sunlight, then sets at 7:00 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:28 AM with 14:25 of moolight, then sets at 3:53 PM

Top Story

Ottawa Weather Report

Chicago: Cooler, Fall-Like Temperatures to Linger

September 17, 2014; 1:12 AM ET

The cooler, below-average conditions responsible for the fall-like feel will hold through the end of the week over the Chicago area. more >

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps