Washington County Weather Today — Illinois, United States
Current temperature, rain chance, humidity, wind and air quality in Washington County, plus an hourly and 3-day forecast. Updated through the day.
21:45
Fri, 18 Sep 2026
📍 Illinois, United States
Washington County??
14
°C
Partly Cloudy
Feels 13°C · 57°F
💧 87% Humidity
💨 ↙ 4.7 km/h SW
👁 10 km Visibility
🌧 0 mm Precip
☁ 43% Cloud
☀️ UV Low
🌿 AQI Good
☀️ UV Index
0
Low
🔵 Pressure
1021
hPa · 30.14 in
💨 Wind
4.7
km/h · Gust 22.7 km/h
↙ SW
💧 Humidity
87%
Dew point 11.5°C
👁 Visibility
10
km · 6 miles
🌡 Heat Index
13.6°
Wind chill 14°C
🌿 Air Quality
Good
US EPA Index: 1
🌅
Sunrise
06:53 AM
🌇
Sunset
07:19 PM
📅 3-Day Forecast
Friday
18 Sep 2026
Sunny
19°
/
12°
💧75%
🌧0.02mm
💨9
☀️UV 4.7
Saturday
19 Sep 2026
Overcast
19°
/
11°
💧80%
🌧0.01mm
💨8
☀️UV 4.1
Sunday
20 Sep 2026
Sunny
19°
/
11°
💧76%
🌧0mm
💨9
☀️UV 4.6
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