• Today

    Sep 18

    73°Lo 48°

    Abundant sunshine and nice

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

    Sep 19

    76°Lo 59°

    Intervals of clouds and sun

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

    Sep 20

    80°Lo 59°

    A couple of p.m. t-storms

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

    Sep 21

    75°Lo 51°

    Clouds breaking; less humid

    Low ragweed pollen levels
    • Precip
      12%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      51%
    more
  • Mon

    Sep 22

    70°Lo 48°

    Times of clouds and sun

    Ragweed Pollen Weather
    • Precip
      3%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      46%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sat
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
T-storms
Mostly Cloudy
Mostly Cloudy
Temp (°F) 65° 69° 73° 75° 78° 75° 80° 79°
RealFeel® 65° 71° 77° 81° 85° 82° 88° 84°
Humidity 82% 77% 72% 68% 65% 81% 70% 72%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
7%
 
7%
 
7%
 
7%
 
10%
 
56%
 
49%
 
47%
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 2 SSW 2 SSW 2 SW 2 SW 3 SW 2 SW 2 SW
UV Index 1 2 3 4 4 4 3 2
Cloud Cover 76% 76% 76% 76% 76% 76% 76% 77%
Dew Point 59° 61° 63° 64° 65° 69° 70° 69°
Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F

Temperature History - Sep 20

more Historical Weather Data >
  Today Normal Record 9/20/2013
High 80° 75° 95° (1908) 71°
Low 59° 52° 32° (1937) 50°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:41 AM with 12:15 of sunlight, then sets at 6:56 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:19 AM with 13:42 of moolight, then sets at 5:01 PM

Top Story

Ottawa Weather Report

Chicago: Cooler, Fall-Like Temperatures to Linger

September 18, 2014; 6:12 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 >

Sat. Dust & Dander

Sat. Wind Maps