Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Pollen levels may spike this year due to the weather. Read AccuWeather's allergy forecast for the U.S. Chevron right
Rounds of severe weather to ramp up later this week. Get the details. Chevron right

Ottawa, IL

40°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Ottawa

Illinois

40°
No results found.
Try searching for a city, zip code or point of interest.
Create Your Account Unlock extended daily and hourly forecasts — all with your free account.
Let's Go Chevron right
Have an account already? Log In
settings
Help
Ottawa, IL Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps
News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel
For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center

Today

 Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

Today's Weather

Wed, Mar 4

Rather cloudy; a brief shower or two this morning followed by a little rain this afternoon Hi: 55°

Tonight: Areas of fog will reduce visibility with periods of rain and a thunderstorm Lo: 42°

Current Weather

9:47 AM

40°F
RealFeel® 40°
Cloudy More Details
RealFeel Shade™ 38°
Wind ENE 4 mph
Wind Gusts 10 mph
Air Quality Poor

Looking Ahead

Thunderstorms, some heavy, late Friday night

Ottawa Weather Radar

Ottawa Weather Radar
Static Radar Temporarily Unavailable
Thank you for your patience as we work to get everything up and running again.
Refresh Page
Clouds
Temperature

Hourly Weather

10 AM 43°
rain drop 24%
11 AM 46°
rain drop 19%
12 PM 49°
rain drop 24%
1 PM 51°
rain drop 33%
2 PM 53°
rain drop 33%
3 PM 55°
rain drop 38%
4 PM 53°
rain drop 44%
5 PM 51°
rain drop 40%
6 PM 51°
rain drop 36%
7 PM 49°
rain drop 34%
8 PM 47°
rain drop 34%
9 PM 46°
rain drop 40%

10-Day Weather Forecast

Today

3/4

55° 42°

A little afternoon rain

Night: Fog with rain and a t-storm
80%

Thu

3/5

52° 40°

A shower in the a.m.; cloudy

Partly cloudy
57%

Fri

3/6

72° 54°

A shower and thunderstorm

Heavy t-storms late; windy
88%

Sat

3/7

59° 33°

Low clouds may break; windy

Clear and colder
25%

Sun

3/8

65° 44°

Breezy in the afternoon

Clear
2%

Mon

3/9

70° 52°

Partly sunny and breezy

Partly cloudy and breezy
19%

Tue

3/10

69° 40°

Mostly cloudy, p.m. t-storms

Early t-storms, then showers
76%

Wed

3/11

45° 25°

Windy; a little morning rain

Clear and colder
57%

Thu

3/12

39° 35°

Turning cloudy

Overcast with a shower late
2%

Fri

3/13

45° 28°

Rain at times

Mainly clear
60%

Sun & Moon

11 hrs 23 mins
Rise 6:26 AM
Set 5:49 PM
Waning Gibbous
Rise 7:26 PM
Set 7:11 AM

Air Quality

See More
Air Quality Poor

The air has reached a high level of pollution and is unhealthy for sensitive groups. Reduce time spent outside if you are feeling symptoms such as difficulty breathing or throat irritation.

Allergy Outlook

See All
Tree Pollen Low Data is not supported in this location Ragweed Pollen Low Data is not supported in this location Mold Low Data is not supported in this location Grass Pollen Low Data is not supported in this location Dust & Dander High Data is not supported in this location

Top Stories

Weather Forecasts

2026 Allergy Forecast: When will pollen be bad across the US?

3 hours ago

Severe Weather

Severe storms to rumble in central US into this weekend

5 hours ago

Weather Forecasts

Temperatures to surge to May-like levels in eastern US

5 hours ago

Recreation

Death Valley’s best superbloom since 2016 is here

51 minutes ago

Recreation

Body recovered from Hawaii Volcanoes National Park

44 minutes ago

 More Stories

Featured Stories

Recreation

Yellowstone geyser erupts for 1st time since 2020

21 hours ago

Recreation

Helicopter rescue saves missing hiker with frostbite in Adirondacks

21 hours ago

Winter Weather

The fences that saved Wyoming big money and cut crashes by 70%

1 day ago

Travel

2 rescued after hot air balloon crashes, dangles from Texas cell tower

23 hours ago

Travel

United Airlines flight makes emergency landing over possible engine fi...

23 hours ago
World North America United States Illinois Ottawa

Weather Near Ottawa:

  • Chicago, IL
  • Joliet, IL
  • Naperville, IL
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...