• Today

    Mar 3

    39°Lo 9°

    A wintry mix changing to rain

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
  • Wed

    Mar 4

    18°Lo -1°

    Some sun; breezy, much colder

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

    Mar 5

    15°Lo 2°

    Frigid with abundant sunshine

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

    Mar 6

    36°Lo 27°

    Sunny, breezy and not as cold

    Low ragweed pollen levels
    • Precip
      3%
    • Wind
      Speed
      20 mph
    • Cloud
      Cover
      1%
    more
  • Sat

    Mar 7

    40°Lo 17°

    Chilly with some sun

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      12 mph
    • Cloud
      Cover
      63%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
5am
6am 7am 8am 9am 10am 11am 12pm
  5am 6am 7am 8am 9am 10am 11am 12pm
Forecast
Cloudy
Cloudy
Ice
Cloudy
Cloudy
Cloudy
Rain & Snow
Rain
Temp (°F) 31° 32° 33° 34° 35° 37° 37° 38°
RealFeel® 19° 20° 19° 21° 22° 23° 20° 22°
Humidity 74% 72% 78% 77% 76% 78% 80% 82%
   
  5am 6am 7am 8am 9am 10am 11am 12pm
Rain
 
0%
 
2%
 
22%
 
22%
 
27%
 
49%
 
59%
 
59%
Snow
 
36%
 
33%
 
33%
 
33%
 
33%
 
37%
 
40%
 
37%
Ice
 
47%
 
47%
 
51%
 
47%
 
39%
 
32%
 
32%
 
21%
   
  5am 6am 7am 8am 9am 10am 11am 12pm
Wind (mph) 13 SSE 14 SSE 14 SSE 15 SSE 17 SSE 18 S 18 SSW 20 SSW
UV Index 0 0 0 0 0 1 1 1
Cloud Cover 99% 100% 100% 100% 99% 99% 99% 99%
Dew Point 23° 24° 27° 27° 28° 30° 32° 33°
Middle Grid line 40 F Middle Grid line 35 F Middle Grid line 30 F

Temperature History - Mar 3

more Historical Weather Data >
  Today Normal Record 3/3/2014
High 39° 43° 78° (1974) 19°
Low 24° -6° (2014) -6°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:27 AM with 11:21 of sunlight, then sets at 5:48 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:11 PM with 13:29 of moolight, then sets at 5:40 AM

Ottawa Weather Report

Chicago: Wintry Mix to Precede Harsh Cold

March 3, 2015; 4:15 AM ET

While Chicago will escape the brunt of a snowstorm moving from the Rockies to the Midwest, the city will still see some wintry precipitation early this week. more >

Making a Forecast: The Sixth Sense

Feb 16, 2015; 5:00 AM ET What steps go into making a forecast?

Tue. Pollen

Tue. Dust & Dander

Tue. Wind Maps