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 23:00 · NOAA HRRR model
25 °C
Clear sky
Feels like 29 °C
Next 12 h
- 2325°
- 0025°
- 0124°
- 0224°
- 0323°
- 0422°
- 0522°
- 0621°
- 06:11Sunrise
- 0722°
- 0824°
- 0925°
- 1027°
- 1128°
↓ 21°06:00↑ 28°11:00
- Humidity
- 88 %
- Dew point
- 23 °C
- Gusts
- 6.1 km/h
- Clouds
- 1 %
- Pressure
- 1,016 hPa ↓
- Storm
- likely
Grid point 0.7 km away · 3.0 km grid · elevation 149 m
Air quality
The European air-quality index for the city, and the pollutants that set it.
Index set by PM2.5
- PM2.5
- 10.7µg/m³
- PM10
- 11.0µg/m³
- Ozone
- 42.0µg/m³
- Nitrogen dioxide
- 3.8µg/m³
- Sulphur dioxide
- 0.8µg/m³
- Carbon monoxide
- 174.0µg/m³
- Dust (AOD)
- 0.01
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
Partly cloudy
29°
25°
Sat
Clear sky
31°
21°
Sun
Partly cloudy
33°
24°
Mon
Mainly clear14 %
34°
25°
Tue
Partly cloudy40 %
35°
25°
Wed
Thunderstorm40 %
31°
25°
Thu
Light drizzle5 mm
30°
23°
Fri
Light drizzle1 mm
31°
24°
Sat
Thunderstorm40 mm
27°
24°
Sun
Light drizzle1 mm
29°
23°
Sun and UV
Sunrise, sunset, day length and ultraviolet intensity.
- Sunrise
- 06:10
- Daylight
- 13 h 58
- Sunset
- 20:08
Radiation · 0.5 MJ/m²
Today in O'Fallon the mean temperature will be 26.7 °C — +1.6 °C against the normal for 7 August, measured from 1940 to 2026. (1,290 obs.)
Nearby cities
The climate around O'Fallon