Ottawa Weather Today — Illinois, United States
Current temperature, rain chance, humidity, wind and air quality in Ottawa, plus an hourly and 3-day forecast. Updated through the day.
10:24
Fri, 18 Sep 2026
📍 Illinois, United States
Ottawa??
20
°C
Cloudy
Feels 19°C · 68°F
💧 76% Humidity
💨 → 16.9 km/h ENE
👁 10 km Visibility
🌧 0 mm Precip
☁ 74% Cloud
☀️ UV Moderate
🌿 AQI Good
☀️ UV Index
2.8
Moderate
🔵 Pressure
1024
hPa · 30.23 in
💨 Wind
16.9
km/h · Gust 21.3 km/h
→ ENE
💧 Humidity
76%
Dew point 15.6°C
👁 Visibility
10
km · 6 miles
🌡 Heat Index
20°
Wind chill 20°C
🌿 Air Quality
Good
US EPA Index: 1
🌅
Sunrise
06:38 AM
🌇
Sunset
07:00 PM
📅 3-Day Forecast
Friday
18 Sep 2026
Patchy rain nearby
24°
/
17°
💧80%
🌧0.72mm
💨19
☀️UV 6.1
Saturday
19 Sep 2026
Light rain shower
22°
/
17°
💧95%
🌧12.81mm
💨16
☀️UV 0.9
Sunday
20 Sep 2026
Patchy rain nearby
21°
/
16°
💧94%
🌧3.56mm
💨25
☀️UV 3.8
🏙 More Cities in Illinois
🌤
Abingdon
View weather →
🌤
Adams County
View weather →
🌤
Addison
View weather →
🌤
Albany Park
View weather →
🌤
Albers
View weather →
🌤
Albion
View weather →
🌤
Aledo
View weather →
🌤
Alexander
View weather →
🌤
Algonquin
View weather →
🌤
Alorton
View weather →
🌤
Alsip
View weather →
🌤
Altamont
View weather →