• Today

    Aug 24

    83°Lo 71°

    Heavy rain and a thunderstorm

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

    Aug 25

    80°Lo 60°

    Mostly cloudy with a t-storm

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

    Aug 26

    78°Lo 60°

    Periods of sun; less humid

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

    Aug 27

    81°Lo 67°

    An afternoon thunderstorm

    High ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      5 - High
    • Tree
      Pollen
      1 - Low
    more
  • Sun

    Aug 28

    84°Lo 66°

    Mostly cloudy and humid

    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 >
  Wed
4pm
5pm 6pm 7pm 8pm 9pm 10pm 11pm
  4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm
Forecast
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
T-storms
Cloudy
Cloudy
T-storms
Cloudy
Temp (°F) 82° 83° 82° 80° 78° 77° 76° 75°
RealFeel® 92° 92° 91° 83° 85° 84° 78° 82°
Humidity 80% 80% 82% 85% 87% 93% 95% 97%
   
  4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm
Rain
 
43%
 
43%
 
47%
 
51%
 
47%
 
48%
 
52%
 
40%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm
Wind (mph) 9 S 8 SSW 8 SSW 7 S 7 SSW 7 SW 7 SW 7 SW
UV Index 2 1 1 0 0 0 0 0
Cloud Cover 80% 81% 85% 90% 94% 94% 94% 94%
Dew Point 75° 76° 76° 75° 74° 75° 74° 74°
Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F

Temperature History - Aug 24

more Historical Weather Data >
  Today Normal Record 8/24/2015
High 83° 82° 103° (1947) 74°
Low 71° 62° 43° (1942) 55°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:14 AM with 13:26 of sunlight, then sets at 7:40 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:52 PM with 14:30 of moolight, then sets at 2:22 PM

Ottawa Weather Report

Strong thunderstorms to target St. Louis to Chicago into Thursday

August 24, 2016; 11:15 AM ET

Rounds of showers and thunderstorms will bring the potential for flash flooding and localized damaging wind gusts through Thursday. more >

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps