O'Fallon weather — 10-day forecast
Temperature, rain, wind and feels-like in O'Fallon, hour by hour and over 10 days, with the seasonal normal for context.
Now
Reading from 17:00 · NOAA HRRR model
32 °C
Clear sky
Feels like 34 °C
Next 12 h
- 1732°
- 1832°
- 1930°
- 2028°
- 20:04Sunset
- 2127°
- 2226°
- 2326°10 %
- 0025°
- 0125°10 %
- 0224°
- 0323°
- 0423°
- 0522°10 %
↑ 32°17:00↓ 22°05:00
- Humidity
- 53 %
- Dew point
- 21 °C
- Gusts
- 13.3 km/h
- Clouds
- 12 %
- Pressure
- 1,016 hPa
- Storm
- likely
Grid point 0.8 km away · 3.0 km grid · elevation 169 m
Air quality
The European air-quality index for the city, and the pollutants that set it.
Index set by Ozone
- Ozone
- 82.0µg/m³
- PM2.5
- 15.6µg/m³▲
- PM10
- 17.4µg/m³
- Nitrogen dioxide
- 4.2µg/m³
- Sulphur dioxide
- 3.0µg/m³
- Carbon monoxide
- 240.0µg/m³
- Dust (AOD)
- 0.02
Generated using Copernicus Atmosphere Monitoring Service information
Hour by hour
Step-by-step detail: temperature, wind, cloud cover and ultraviolet.
10 days
Each day's extremes and the chance of rain, out to the end of the run.
Rain probability (> 1 mm): 50 ECMWF ensemble members.
Today
Mainly clear36 %
32°
26°
Sat
Clear sky8 %
32°
22°
Sun
Partly cloudy8 %
32°
22°
Mon
Mainly clear10 %
34°
24°
Tue
Partly cloudy42 %
35°
25°
Wed
Thunderstorm42 %
31°
25°
Thu
Thunderstorm13 mm
31°
23°
Fri
Light drizzle3 mm
30°
24°
Sat
Thunderstorm9 mm
27°
24°
Sun
Light showers5 mm
29°
23°
Sun and UV
Sunrise, sunset, day length and ultraviolet intensity.
- Sunrise
- 06:07
- Daylight
- 13 h 57
- Sunset
- 20:04
Radiation · 12.2 MJ/m²
Today in O'Fallon the mean temperature will be 29.4 °C — +4.0 °C against the normal for 7 August, measured from 1940 to 2026. (1,290 obs.)
Nearby cities
The climate around O'Fallon