Need precision hour-by-hour weather for Saint Clair County? Our Hourly Weather Tracker provides real-time hourly temperature shifts, wind speeds, humidity levels, and exact rain probability curves.
Saint Clair County Hourly Weather Tracker
Friday, Oct 23, 2026
Nighttime
64°F
Sunny / Clear
Feels like 64°F
Humidity
66%
Wind Speed
3.4 mph
Precipitation
0 in
Pressure
1023 hPa
UV Index
0
Visibility
10 mi
Cloud Cover
0%
Dew Point
55°F
Detailed 48-Hour Tracker
Air Quality (AQI)
84Moderate
Air quality is acceptable. However, there may be a risk for some people.
PM2.5
22.5 µg/m³
PM10
22.5 µg/m³
Sun & Moon Phase
Sunrise
6:00 AM
Sunset
8:00 PM
Moon Phase
Waxing Gibbous
7-Day Overview
Extended Local Forecasts
Location View
Saint Clair County · 38.50°N, 89.96°W
Coordinates38.5032°N, 89.9560°W
Elevationm
TimezoneAmerica/New_York
Nearby Cities in Illinois
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Safety & Environmental Index
| Metric | Value | Status / Interpretation |
|---|---|---|
| Air Quality (AQI) | 84 | Moderate |
| UV Index | 0 | Low Risk |
| Visibility | 10 miles | Clear |
Frequently Asked Questions
Our hourly forecast provides hour-by-hour updates on temperature, wind speed, and rain probability in Saint Clair County to help you plan your day with precision.
About Saint Clair County Climate & Weather
Weather forecast for Saint Clair County is powered by high-resolution weather models using open-source infrastructure. Check current temperatures, rain radar graphs, hourly wind speeds, humidity values, and ultraviolet indexes directly from our weather tracking console.
Meteorological Data: Weather data for this area is aggregated from global and regional forecast models (GFS, HRRR, ERA5) and updated continuously every hour.