Live Weather & Forecast

Weather in Pontiac

Illinois, United States · Real-time conditions & 3-day outlook

Flag of United States
Overcast
20°C
Feels like 20°C
68°F / Feels 68°F
Overcast
Pontiac, Illinois
🌞 Daytime
Updated: 2026-04-15 14:00
💧
Humidity
97%
💨
Wind
23.4 km/h SW
🌬️
Wind Gust
34.2 km/h
🌡️
Pressure
1011 mb
👁️
Visibility
16 km
☀️
UV Index
1.1 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
100%
💦
Dew Point
20.1°C
🌐
Wind Degree
225°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
167.9 μg/m³
NO₂
6.4 μg/m³
O₃
70 μg/m³
SO₂
1.6 μg/m³
PM 2.5
6.6 μg/m³
PM 10
6.9 μg/m³

Weather Alerts 5

Met · Unknown · Future
Hydrologic Outlook issued April 14 at 12:33PM CDT by NWS Chicago IL

ESFLOT Waves of showers and thunderstorms are expected this evening through the end of the week. Urban and river flooding will be possible. Atmospheric conditions are favorable for some thunderstorms to have rainfall rates in excess of 1 to 2 inches per hour tonight and tomorrow. In addition, some rivers and streams remain elevated from recent rainfall and soil moisture is elevated across most o...

Met · Severe · Future
Flood Watch issued April 15 at 5:15AM CDT until April 16 at 1:00AM CDT by NWS Chicago IL

* WHAT...Flash flooding caused by excessive rainfall remains possible. * WHERE...Portions of Illinois, including the following counties, Grundy, Kankakee, La Salle, Lee and Livingston and northwest Indiana, including the following counties, Jasper, Newton and Porter. * WHEN...Through late tonight. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage an...

A Flood Watch for flash flooding means rapid-onset flooding is possible, but not yet certain, based upon the latest forecasts. Flash flooding is a dangerous situation. Persons with interests along area rivers, creeks, and other waterways should monitor the latest forecasts and be prepared to take ac...

Met · Severe · Future
Flood Watch issued April 14 at 10:37PM CDT by NWS Chicago IL

...The National Weather Service in Chicago IL has issued a Flood Watch for the following rivers in Illinois... Illinois River at La Salle affecting Putnam, La Salle and Bureau zones. For the Illinois River (Upper)...including La Salle...flooding is possible. * WHAT...Flooding is possible. * WHERE...Illinois River from Starved Rock Lock and Dam downstream to confluence with Big Bureau Creek, in...

A Flood Watch means water levels above flood stage are possible, but not yet certain, based upon the latest forecasts. Persons along rivers and streams in the watch area should monitor the latest forecasts and be prepared to take action should flooding develop. These forecasts are based on observ...

Met · Severe · Future
Flood Watch issued April 15 at 10:54AM CDT by NWS Chicago IL

...The Flood Watch continues for the following rivers in Illinois... Illinois River at La Salle affecting Putnam, La Salle and Bureau zones. For the Illinois River (Upper)...including La Salle...flooding is possible. * WHAT...Flooding is possible. * WHERE...Illinois River from Starved Rock Lock and Dam downstream to confluence with Big Bureau Creek, including the La Salle gauge. * WHEN...Unti...

A Flood Watch means water levels above flood stage are possible, but not yet certain, based upon the latest forecasts. Persons along rivers and streams in the watch area should monitor the latest forecasts and be prepared to take action should flooding develop. These forecasts are based on observ...

Met · Severe · Future
Flood Watch issued April 15 at 10:43AM CDT until April 18 at 1:00PM CDT by NWS Chicago IL

...The National Weather Service in Chicago IL has issued a Flood Watch for the following rivers in Illinois... Fox River at Dayton affecting La Salle zone. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater, Montgomery, Dayton...flooding is possible. * WHAT...Flooding is possible. * WHERE...Fox River from Millington downstream to confluence with the Illinois River, includi...

A Flood Watch means water levels above flood stage are possible, but not yet certain, based upon the latest forecasts. Persons along rivers and streams in the watch area should monitor the latest forecasts and be prepared to take action should flooding develop. These forecasts are based on observ...

Today's Hourly Forecast

24-hour breakdown for Pontiac, Illinois

12 AM
Clear
23°
Clear
💧 65% 💨 23.4 km/h
1 AM
Clear
22°
Clear
💧 72% 💨 19.8 km/h
2 AM
Clear
21°
Clear
💧 77% 💨 30.2 km/h
3 AM
Clear
21°
Clear
💧 79% 💨 20.5 km/h
4 AM
Clear
21°
Clear
💧 82% 💨 18.7 km/h
5 AM
Patchy rain nearby
20°
Patchy rain nearby
💧 83% 💨 16.9 km/h 🌧️ 100%
6 AM
Patchy rain nearby
20°
Patchy rain nearby
💧 84% 💨 15.8 km/h 🌧️ 100%
7 AM
Patchy rain nearby
20°
Patchy rain nearby
💧 83% 💨 19.8 km/h 🌧️ 60%
8 AM
Patchy rain nearby
19°
Patchy rain nearby
💧 91% 💨 17.6 km/h 🌧️ 100%
9 AM
Moderate rain
19°
Moderate rain
💧 95% 💨 24.8 km/h 🌧️ 100%
10 AM
Moderate rain at times
20°
Moderate rain at times
💧 96% 💨 22.3 km/h 🌧️ 100%
11 AM
Patchy rain nearby
21°
Patchy rain nearby
💧 91% 💨 20.2 km/h 🌧️ 80%
12 PM
Partly Cloudy
23°
Partly Cloudy
💧 87% 💨 26.3 km/h
1 PM
Sunny
24°
Sunny
💧 81% 💨 23 km/h
2 PM
Overcast
20°
Overcast
💧 97% 💨 23.4 km/h
3 PM
Sunny
24°
Sunny
💧 71% 💨 20.9 km/h
4 PM
Cloudy
24°
Cloudy
💧 81% 💨 22.7 km/h
5 PM
Sunny
23°
Sunny
💧 85% 💨 25.6 km/h
6 PM
Patchy rain nearby
22°
Patchy rain nearby
💧 88% 💨 25.9 km/h 🌧️ 100%
7 PM
Patchy rain nearby
20°
Patchy rain nearby
💧 86% 💨 23 km/h 🌧️ 100%
8 PM
Clear
19°
Clear
💧 84% 💨 19.8 km/h
9 PM
Clear
19°
Clear
💧 88% 💨 17.6 km/h
10 PM
Patchy rain nearby
18°
Patchy rain nearby
💧 85% 💨 17.3 km/h 🌧️ 100%
11 PM
Clear
18°
Clear
💧 86% 💨 19.8 km/h

3-Day Forecast

Daily overview for Pontiac, Illinois

Today
Moderate rain
Moderate rain
25° / 18°
🌧️ 83% chance of rain
💧 Avg. humidity: 83%
💨 Max wind: 30.2 km/h
🌧️ Total precip: 17.21 mm
☀️ UV Index: 0.8
🌅 Sunrise: 06:15 AM
🌇 Sunset: 07:35 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Thu, Apr 16
Patchy rain nearby
Patchy rain nearby
23° / 16°
🌧️ 82% chance of rain
💧 Avg. humidity: 80%
💨 Max wind: 29.2 km/h
🌧️ Total precip: 1.26 mm
☀️ UV Index: 1.7
🌅 Sunrise: 06:14 AM
🌇 Sunset: 07:36 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Cloudy
Cloudy
29° / 11°
🌧️ 0% chance of rain
💧 Avg. humidity: 79%
💨 Max wind: 36 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.8
🌅 Sunrise: 06:12 AM
🌇 Sunset: 07:37 PM
🌙 New Moon
🌑 Moon: 0% lit

Best Time to Visit Pontiac

Plan your trip to Pontiac, United States around the most favorable weather conditions.

Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
← Back to Pontiac 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Pontiac?
Current conditions in Pontiac: Overcast, temperature 20°C, humidity 97%.
What is the best time to visit Pontiac?
The best time to visit Pontiac is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Pontiac?
Pontiac is located at approximately 40.9° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Pontiac?
The wettest period in Pontiac is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Pontiac?
For visits to Pontiac during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Pontiac in?
Pontiac is located in United States, in the state of Illinois.
What are the public holidays in Pontiac in 2026?
View the 2026 public holidays for Pontiac on our Holidays page.
What are the GPS coordinates used for the weather forecast in Pontiac?
The weather forecast for Pontiac uses coordinates 40.8809, -88.6298.