• Today

    May 1

    58°Lo 44°

    A couple of afternoon showers

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Mon

    May 2

    60°Lo 41°

    Variable clouds

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
  • Tue

    May 3

    69°Lo 49°

    Warmer with some sun

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Wed

    May 4

    59°Lo 39°

    Cooler with a shower in spots

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

    May 5

    61°Lo 39°

    Sunny to partly cloudy

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
3am
4am 5am 6am 7am 8am 9am 10am
  3am 4am 5am 6am 7am 8am 9am 10am
Forecast
Cloudy
Cloudy
Cloudy
Partly Sunny
Mostly Sunny
Partly Sunny
Partly Cloudy
Cloudy
Temp (°F) 46° 45° 44° 44° 45° 47° 50° 53°
RealFeel® 40° 39° 37° 38° 40° 43° 47° 50°
Humidity 77% 79% 82% 84% 82% 77% 70% 65%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Rain
 
1%
 
1%
 
1%
 
1%
 
1%
 
2%
 
2%
 
2%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Wind (mph) 9 NNE 9 NNE 9 NNE 9 NNE 9 NNE 9 NNE 10 NE 10 NE
UV Index 0 0 0 0 0 1 2 2
Cloud Cover 100% 100% 69% 35% 19% 34% 67% 97%
Dew Point 39° 39° 38° 40° 40° 41° 40° 41°
Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F Middle Grid line 40 F

Temperature History - May 2

more Historical Weather Data >
  Today Normal Record 5/2/2015
High 60° 68° 94° (1901) 78°
Low 41° 46° 29° (1966) 58°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:50 AM with 14:05 of sunlight, then sets at 7:55 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:24 AM with 11:42 of moolight, then sets at 3:06 PM

Ottawa Weather Report

Chicago: Temperature roller coaster in store for new week

May 1, 2016; 9:54 AM ET

The start of May will bring a fluctuation in temperatures throughout the week in Chicago. more >

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps