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O'Fallon, IL

40°F
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O'Fallon

Illinois

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O'Fallon, IL Weather
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Winter Center

Today

 Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

Today's Weather

Mon, Feb 16

Fog will lift this morning; partly sunny and warm Hi: 66°

Tonight: Partly cloudy Lo: 42°

Current Weather

7:18 AM

40°F
RealFeel® 42°
Sunny More Details
RealFeel Shade™ 41°
Wind S 3 mph
Wind Gusts 7 mph
Air Quality Poor

Looking Ahead

A thunderstorm Thursday afternoon; storms can bring hail and damaging winds

O'Fallon Weather Radar

O'Fallon Weather Radar
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Clouds
Temperature

Hourly Weather

8 AM 39°
rain drop 0%
9 AM 43°
rain drop 0%
10 AM 48°
rain drop 0%
11 AM 55°
rain drop 0%
12 PM 61°
rain drop 0%
1 PM 64°
rain drop 0%
2 PM 66°
rain drop 0%
3 PM 65°
rain drop 0%
4 PM 63°
rain drop 0%
5 PM 60°
rain drop 0%
6 PM 57°
rain drop 0%
7 PM 54°
rain drop 0%

10-Day Weather Forecast

Today

2/16

66° 42°

Fog will lift this morning

Night: Partly cloudy
0%

Tue

2/17

62° 58°

Breezy in the afternoon

Breezy; a shower late
1%

Wed

2/18

74° 45°

Turning sunny; warmer

Mainly clear
25%

Thu

2/19

70° 38°

A stray afternoon t-storm

Clearing; breezy late
55%

Fri

2/20

51° 34°

Cooler with clouds and sun

Partly cloudy
11%

Sat

2/21

52° 34°

Mostly cloudy

Mainly clear
18%

Sun

2/22

47° 23°

Partly sunny and windy

Mainly clear and colder
10%

Mon

2/23

44° 25°

Mostly cloudy

A bit of ice late
0%

Tue

2/24

51° 39°

Rain; some ice early

A shower early; cloudy
67%

Wed

2/25

60° 44°

Cloudy and windy with showers

A little evening rain; clouds
80%

Sun & Moon

10 hrs 49 mins
Rise 6:50 AM
Set 5:39 PM
Waning Crescent
Rise 6:31 AM
Set 4:57 PM

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

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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

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World North America United States Illinois O'Fallon

Weather Near O'Fallon:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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