Mason County Weather Today — Illinois, United States
Current temperature, rain chance, humidity, wind and air quality in Mason County, plus an hourly and 3-day forecast. Updated through the day.
04:05
Sat, 19 Sep 2026
📍 Illinois, United States
Mason County??
27
°C
Smoky haze
Feels 29°C · 80°F
💧 76% Humidity
💨 ↓ 5 km/h SSE
👁 10 km Visibility
🌧 0 mm Precip
☁ 90% Cloud
☀️ UV Low
🌿 AQI Fair
☀️ UV Index
0
Low
🔵 Pressure
1012
hPa · 29.89 in
💨 Wind
5
km/h · Gust 23 km/h
↓ SSE
💧 Humidity
76%
Dew point 21.9°C
👁 Visibility
10
km · 6 miles
🌡 Heat Index
29.1°
Wind chill 26.6°C
🌿 Air Quality
Fair
US EPA Index: 2
🌅
Sunrise
06:09 AM
🌇
Sunset
06:16 PM
📅 3-Day Forecast
Saturday
19 Sep 2026
Light rain shower
26°
/
23°
💧97%
🌧15.75mm
💨8
☀️UV 8.8
Sunday
20 Sep 2026
Light rain shower
26°
/
23°
💧97%
🌧14.94mm
💨11
☀️UV 9.2
Monday
21 Sep 2026
Fog
25°
/
22°
💧97%
🌧13mm
💨8
☀️UV 7.5
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