🇺🇸 Weather in O'Fallon
Map Overlays:
Hourly Forecast for O'Fallon
04:00
18°
0%
05:00
17°
66%
06:00
17°
0%
07:00
17°
0%
08:00
18°
80%
09:00
19°
0%
10:00
19°
0%
11:00
20°
100%
12:00
20°
0%
13:00
19°
100%
14:00
18°
0%
15:00
17°
0%
16:00
17°
100%
17:00
16°
0%
18:00
15°
0%
19:00
14°
0%
20:00
13°
0%
21:00
12°
0%
22:00
12°
0%
23:00
11°
0%
00:00
10°
0%
01:00
10°
0%
02:00
10°
0%
03:00
10°
0%
14-Day Forecast for O'Fallon
Fri, Apr 10
Patchy rain nearby
20° /
11°
Sat, Apr 11
Cloudy
20° /
10°
Sun, Apr 12
Cloudy
25° /
16°
Mon, Apr 13
Patchy rain nearby
29° /
19°
Tue, Apr 14
Thundery outbreaks in nearby
29° /
20°
Wed, Apr 15
Patchy rain nearby
24° /
17°
Thu, Apr 16
Sunny
28° /
14°
Fri, Apr 17
Moderate rain
28° /
16°
Sat, Apr 18
Patchy rain nearby
30° /
18°
Sun, Apr 19
Patchy rain nearby
28° /
16°
Mon, Apr 20
Sunny
20° /
11°
Tue, Apr 21
Patchy rain nearby
13° /
10°
Wed, Apr 22
Patchy rain nearby
28° /
12°
Thu, Apr 23
Sunny
25° /
15°
Additional Forecasts for O'Fallon
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 157.8 μg/m³
O₃ (Ozone) 81.0 μg/m³
NO₂ (Nitrogen Dioxide) 4.2 μg/m³
SO₂ (Sulphur Dioxide) 2.1 μg/m³
PM2.5 (Fine particles) 4.7 μg/m³
PM10 (Coarse particles) 4.7 μg/m³
