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O'Fallon, IL

79°F
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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

Sat, Jul 12

Episodes of sunshine with a couple of heavy thunderstorms in the afternoon; thunderstorms can bring flooding downpours, hail and damaging wind gusts Hi: 88°

Tonight: A thunderstorm in spots in the evening; otherwise, cloudy Lo: 71°

Current Weather

1:25 AM

79°F
RealFeel® 84°
Partly cloudy More Details
Wind SSW 5 mph
Wind Gusts 10 mph
Air Quality Fair

Looking Ahead

Thunderstorms, some heavy, this afternoon

O'Fallon Weather Radar

O'Fallon Weather Radar
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Clouds
Temperature

Hourly Weather

2 AM 75°
rain drop 51%
3 AM 75°
rain drop 47%
4 AM 74°
rain drop 47%
5 AM 75°
rain drop 51%
6 AM 75°
rain drop 47%
7 AM 76°
rain drop 30%
8 AM 78°
rain drop 3%
9 AM 80°
rain drop 3%
10 AM 82°
rain drop 3%
11 AM 84°
rain drop 3%
12 PM 85°
rain drop 3%
1 PM 87°
rain drop 6%

10-Day Weather Forecast

Today

7/12

88° 71°

Heavy afternoon thunderstorms

Night: A thunderstorm around early

90%

Sun

7/13

85° 70°

A thunderstorm in spots

Mostly cloudy

40%

Mon

7/14

88° 69°

A t-storm around in the p.m.

Partly cloudy

40%

Tue

7/15

86° 72°

A shower and thunderstorm

Heavy rain and a t-storm late

70%

Wed

7/16

88° 73°

A t-storm around in the p.m.

A thunderstorm in spots late

40%

Thu

7/17

86° 69°

Humid; a p.m. t-storm or two

Partly to mostly cloudy

73%

Fri

7/18

84° 65°

A t-storm around in the a.m.

Partly cloudy

40%

Sat

7/19

88° 68°

Less humid with low clouds

Rain and a thunderstorm

25%

Sun

7/20

89° 71°

Strong morning thunderstorms

A shower early; mainly clear

61%

Mon

7/21

86° 67°

A t-storm around in the a.m.

Mostly cloudy, a t-storm late

40%

Sun & Moon

14 hrs 40 mins
Rise 5:45 AM
Set 8:25 PM
Waning Gibbous
Rise 10:02 PM
Set 8:30 AM

Air Quality

See More
Air Quality Fair

The air quality is generally acceptable for most individuals. However, sensitive groups may experience minor to moderate symptoms from long-term exposure.

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 Extreme 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
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