• Early AM

    Apr 18

    Lo 53°

    Partly to mostly cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Today

    Apr 18

    75°Lo 54°

    Some sun, then turning cloudy

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

    Apr 19

    63°Lo 50°

    Cooler with downpours

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Mon

    Apr 20

    57°Lo 34°

    Spotty morning showers

    Low ragweed pollen levels
    • Precip
      60%
    • Wind
      Speed
      20 mph
    • Cloud
      Cover
      77%
    more
  • Tue

    Apr 21

    58°Lo 39°

    Windy with plenty of sunshine

    Ragweed Pollen Weather
    • Precip
      9%
    • Wind
      Speed
      24 mph
    • Cloud
      Cover
      0%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sat
2am
3am 4am 5am 6am 7am 8am 9am
  2am 3am 4am 5am 6am 7am 8am 9am
Forecast
Cloudy
Cloudy
Cloudy
Partly Cloudy
Partly Cloudy
Partly Sunny
Partly Cloudy
Partly Cloudy
Temp (°F) 56° 55° 53° 56° 58° 62° 64° 68°
RealFeel® 58° 57° 54° 56° 58° 61° 64° 67°
Humidity 83% 86% 92% 84% 79% 70% 67% 60%
   
  2am 3am 4am 5am 6am 7am 8am 9am
Rain
 
1%
 
1%
 
1%
 
1%
 
1%
 
1%
 
1%
 
1%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  2am 3am 4am 5am 6am 7am 8am 9am
Wind (mph) 1 NNW 1 N 2 WNW 4 NNE 4 NE 5 NE 7 NE 8 ENE
UV Index 0 0 0 0 0 0 1 2
Cloud Cover 69% 59% 51% 47% 45% 45% 70% 70%
Dew Point 51° 51° 51° 51° 51° 52° 53° 53°
Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F

Temperature History - Apr 18

more Historical Weather Data >
  Today Normal Record 4/18/2014
High 75° 64° 92° (2002) 66°
Low 54° 41° 14° (1926) 34°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:13 AM with 13:25 of sunlight, then sets at 7:38 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:34 AM with 13:00 of moolight, then sets at 6:34 PM

Ottawa Weather Report

Chicago: Rain to Span Second Half of Weekend

April 17, 2015; 1:51 PM ET

Weekend weather will be a combination of lower temperatures and significant rainfall, but Chicago will slowly pull out of the damp, cooler conditions through the new week. more >

Sat. Pollen

Sat. Dust & Dander

Sat. Wind Maps