🇺🇸 Weather in O'Fallon
Map Overlays:
Hourly Forecast for O'Fallon
17:00
31°
0%
18:00
30°
0%
19:00
28°
0%
20:00
27°
0%
21:00
23°
77%
22:00
20°
100%
23:00
19°
100%
00:00
18°
100%
01:00
17°
100%
02:00
17°
100%
03:00
14°
100%
04:00
12°
100%
05:00
10°
100%
06:00
9°
100%
07:00
8°
100%
08:00
8°
0%
09:00
8°
0%
10:00
9°
0%
11:00
11°
0%
12:00
14°
0%
13:00
15°
0%
14:00
16°
0%
15:00
17°
0%
16:00
17°
0%
14-Day Forecast for O'Fallon
Fri, Apr 17
Moderate rain
34° /
17°
Sat, Apr 18
Moderate rain
17° /
7°
Sun, Apr 19
Sunny
19° /
5°
Mon, Apr 20
Sunny
26° /
8°
Tue, Apr 21
Patchy rain nearby
25° /
12°
Wed, Apr 22
Patchy rain nearby
26° /
16°
Thu, Apr 23
Sunny
27° /
16°
Fri, Apr 24
Patchy rain nearby
24° /
18°
Sat, Apr 25
Partly Cloudy
14° /
9°
Sun, Apr 26
Partly Cloudy
20° /
8°
Mon, Apr 27
Patchy rain nearby
24° /
12°
Tue, Apr 28
Partly Cloudy
16° /
6°
Wed, Apr 29
Sunny
21° /
8°
Thu, Apr 30
Patchy rain nearby
18° /
9°
Additional Forecasts for O'Fallon
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 163.8 μg/m³
O₃ (Ozone) 94.0 μg/m³
NO₂ (Nitrogen Dioxide) 4.2 μg/m³
SO₂ (Sulphur Dioxide) 1.6 μg/m³
PM2.5 (Fine particles) 6.5 μg/m³
PM10 (Coarse particles) 7.0 μg/m³
