Weather.st

O'Fallon Weather

6°
Clear sky
O'Fallon, Illinois, United States
Feels like 4° · Local time 19:30
2° cooler than this time yesterday

Hour by hour

No rain expected in the next 24 hours.

Now
7°
💧0%
8 PM
6°
💧0%
9 PM
5°
💧0%
10 PM
4°
💧0%
11 PM
4°
💧0%
12 AM
4°
💧0%
1 AM
3°
💧0%
2 AM
3°
💧0%
3 AM
3°
💧0%
4 AM
3°
💧0%
5 AM
3°
💧0%
6 AM
2°
💧0%
7 AM
2°
💧0%
8 AM
5°
💧0%
9 AM
9°
💧0%
10 AM
11°
💧0%
11 AM
13°
💧0%
12 PM
15°
💧0%
1 PM
16°
💧0%
2 PM
17°
💧0%
3 PM
17°
💧0%
4 PM
17°
💧0%
5 PM
14°
💧0%
6 PM
12°
💧0%

Rain radar

Loading radar…

O'Fallon 16-day weather forecast

Today
Overcast · 💧0%
0°12°
Sunday, Nov 8
Mainly clear · 💧0%
2°17°
Monday, Nov 9
Clear sky · 💧0%
3°21°
Tuesday, Nov 10
Clear sky · 💧0%
9°22°
Wednesday, Nov 11
Drizzle · 💧38%
10°18°
Thursday, Nov 12
Overcast · 💧19%
6°10°
Friday, Nov 13
Overcast · 💧3%
0°8°
Saturday, Nov 14
Overcast · 💧0%
-2°9°
Sunday, Nov 15
Clear sky · 💧3%
1°16°
Monday, Nov 16
Overcast · 💧3%
7°20°
Tuesday, Nov 17
Light showers · 💧6%
10°20°
Wednesday, Nov 18
Light showers · 💧19%
10°18°
Thursday, Nov 19
Light showers · 💧29%
9°16°
Friday, Nov 20
Overcast · 💧32%
13°21°
Saturday, Nov 21
Overcast · 💧29%
10°20°
Sunday, Nov 22
Partly cloudy · 💧27%
5°11°

Today's details

Feels like
4°
Humidity
61%
Dew point
-1°
Wind
2 km/h SW
Gusts
2 km/h
Pressure
1022 hPa · steady
UV index now
0 · max 4
Visibility
31 km
Sunrise / sunset
06:33 / 16:53
Moon
Waning Crescent · 6% lit
Hour-by-hour detail — next 48 hours
TimeTempRainAmountHumidityWind
Now7°0%0.0 mm60%4 km/h
8 PM6°0%0.0 mm62%2 km/h
9 PM5°0%0.0 mm64%7 km/h
10 PM4°0%0.0 mm68%7 km/h
11 PM4°0%0.0 mm74%11 km/h
12 AM 11-084°0%0.0 mm77%9 km/h
1 AM 11-083°0%0.0 mm80%10 km/h
2 AM 11-083°0%0.0 mm85%10 km/h
3 AM 11-083°0%0.0 mm86%11 km/h
4 AM 11-083°0%0.0 mm85%10 km/h
5 AM 11-083°0%0.0 mm85%10 km/h
6 AM 11-082°0%0.0 mm86%10 km/h
7 AM 11-082°0%0.0 mm88%10 km/h
8 AM 11-085°0%0.0 mm79%12 km/h
9 AM 11-089°0%0.0 mm68%15 km/h
10 AM 11-0811°0%0.0 mm59%15 km/h
11 AM 11-0813°0%0.0 mm52%14 km/h
12 PM 11-0815°0%0.0 mm49%15 km/h
1 PM 11-0816°0%0.0 mm47%17 km/h
2 PM 11-0817°0%0.0 mm45%17 km/h
3 PM 11-0817°0%0.0 mm44%18 km/h
4 PM 11-0817°0%0.0 mm45%15 km/h
5 PM 11-0814°0%0.0 mm53%9 km/h
6 PM 11-0812°0%0.0 mm62%10 km/h
7 PM 11-0811°0%0.0 mm72%11 km/h
8 PM 11-0810°0%0.0 mm82%11 km/h
9 PM 11-089°0%0.0 mm86%12 km/h
10 PM 11-088°0%0.0 mm85%11 km/h
11 PM 11-087°0%0.0 mm83%10 km/h
12 AM 11-096°0%0.0 mm84%10 km/h
1 AM 11-096°0%0.0 mm88%10 km/h
2 AM 11-095°0%0.0 mm90%10 km/h
3 AM 11-095°0%0.0 mm91%10 km/h
4 AM 11-094°0%0.0 mm92%10 km/h
5 AM 11-094°0%0.0 mm93%9 km/h
6 AM 11-094°0%0.0 mm93%9 km/h
7 AM 11-093°0%0.0 mm94%9 km/h
8 AM 11-096°0%0.0 mm92%8 km/h
9 AM 11-098°0%0.0 mm81%5 km/h
10 AM 11-0912°0%0.0 mm68%5 km/h
11 AM 11-0915°0%0.0 mm57%7 km/h
12 PM 11-0917°0%0.0 mm49%9 km/h
1 PM 11-0920°0%0.0 mm44%11 km/h
2 PM 11-0920°0%0.0 mm42%13 km/h
3 PM 11-0920°0%0.0 mm42%13 km/h
4 PM 11-0919°0%0.0 mm49%7 km/h
5 PM 11-0916°0%0.0 mm56%6 km/h
6 PM 11-0915°0%0.0 mm58%8 km/h

Air quality in O'Fallon

51
US AQI — Moderate
PM2.5 14.3 µg/m³ · PM10 14.6 µg/m³ · O₃ 15 µg/m³

Frequently asked questions

What is the weather in O'Fallon today?

Clear sky, currently 6° (feels like 4°), with a high of 12° and a low of 0°. No rain expected in the next 24 hours.

What is the air quality in O'Fallon?

The air quality in O'Fallon is moderate (US AQI 51). PM2.5 is 14.3 µg/m³ and PM10 is 14.6 µg/m³.

Nearby cities

Fairview Heights · 7 kmBelleville · 10 kmCollinsville · 11 kmEast Saint Louis · 21 kmGranite City · 24 kmEdwardsville · 25 kmSt. Louis · 25 kmLemay · 33 km