• Mostly sunny 79°
    Dust & Dander Current Weather
    • Relative Humidity
      28%
    • Yesterday
      Temp
      71°
    • RealFeel
      80°
  • Tonight

    Apr 20

    Lo 56°

    Increasing clouds

    Dust & Dander Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    Day Details >
  • Tomorrow

    Apr 21

    Hi 75°

    Couple of showers, t-storms

    Low indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    Day Details >
  • Tuesday

    Apr 22

    Hi 62°

    Cooler with clouds breaking

    Low indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    Day Details >
Next

Watch for a strong thunderstorm Thursday

4/20 4/21 Now: 6:08pm
PM 6-10
  • 6pm Partly sunny 78° 1%
  • 7pm Partly sunny 74° 2%
  • 8pm Partly cloudy 71° 4%
  • 9pm Partly cloudy 68° 4%
  • 10pm Partly cloudy 65° 4%
AM 5-10
  • 5am Cloudy 57° 7%
  • 6am Cloudy 56° 7%
  • 7am Cloudy 57° 11%
  • 8am Cloudy 59° 15%
  • 9am Cloudy 62° 15%
  • 10am Cloudy 66° 15%
AM 11-4
  • 11am Mostly cloudy 70° 17%
  • 12pm Mostly cloudy 71° 17%
  • 1pm Cloudy 73° 22%
  • 2pm Cloudy 75° 48%
  • 3pm Thunderstorms 70° 52%
  • 4pm Cloudy 73° 48%
Hourly Forecast >

Ottawa Pollen Levels - April 20

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Grass

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Moderate

  • Mold

    Pollen

    Low

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Top Story

Ottawa Weather Report

Rain Coming to Chicago with Roller Coaster Temperatures

April 20, 2014; 2:22 PM ET

A showery pattern with up-and-down temperatures is coming this week to Chicago. more >

Allergies Live Feed

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Is it a Cold or the Flu?

Apr 19, 2014; 5:00 AM ET Symptoms caused by the common cold can often resemble those associated with the influenza virus, so how do you differentiate between the two?

Sun. Pollen

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