O'Fallon, IL Weather

As of

Weather Station:WeatherBug

Open weather station selector modal

21degrees Fahrenheit

Feels like:10°F

Hi: --Lo: 20

Mostly Clear

Live Weather Radar

O'Fallon, IL weather radar map

Current Weather Details

Windchill
10°
Daily Rain
--"
Dew point
14°
Monthly Rain
1.47"
Humidity
75%
Avg. Wind
S 8 mph
Pressure
--"
Wind Gust
-- mph
Sunrise
6:39 AM
Moon
First Quarter
Sunset
5:47 PM
UV Index
3 (Moderate)

Weather Forecast

  • Tonight

    Lo

    Mostly clear. Low temperature around 24F. Dew point will be around 12F with an average humidity of 58%. Winds will be 4 mph from the S.

  • Tomorrow

    Hi

    Partly sunny this morning then becoming mostly cloudy. Not as cool with highs in the mid 50s. South winds 15 to 20 mph with gusts up to 35 mph.

O'Fallon, IL 10-day weather forecast

AIR QUALITY

27 | Fair

Top Triggers:pm25
Air quality data provided by Ambee
View Today's Air Quality details for O'Fallon, IL

POLLEN COUNT & ALLERGY FORECAST

4.5 Low-Medium

Predominant Pollen:Cedar/Juniper
View the Pollen forecast details

LIGHTNING MAP

Closest strike in the last 30 minutes:1749.8 miles

No Lightning Nearby

Real-time lightning alerts & live Map