Live Weather & Forecast

Weather in Pontiac

Q: What is the current weather in Pontiac?

Current conditions in Pontiac: Partly cloudy, temperature 6°C, humidity 70%.

Q: 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.

Q: What are the GPS coordinates used for the weather forecast in Pontiac?

The weather forecast for Pontiac uses coordinates 40.8809, -88.6298.

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

6^°C

Feels like 1°C

42°F / Feels 33°F

Partly cloudy

Pontiac, Illinois

🌞 Daytime

Updated: 2026-04-18 09:30

💧

Humidity

70%

💨

Wind

29.5 km/h NW

🌬️

Wind Gust

34.7 km/h

🌡️

Pressure

1012 mb

👁️

Visibility

16 km

☀️

UV Index

1.3 (Low)

🌧️

Precipitation

0 mm

☁️

Cloud Cover

75%

💦

Dew Point

2.8°C

🌐

Wind Degree

313°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)

160.9 μg/m³

NO₂

1.6 μg/m³

O₃

95 μg/m³

SO₂

1.2 μg/m³

PM 2.5

3.5 μg/m³

PM 10

3.7 μg/m³

Weather Alerts 4

Met · Severe · Expected

Flood Warning issued April 17 at 1:46PM CDT by NWS Chicago IL

...The National Weather Service in Chicago IL has issued a Flood Warning for the following rivers in Illinois... Illinois River at La Salle affecting La Salle, Bureau and Putnam Counties. For the Illinois River (Upper)...including Ottawa, La Salle...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Illinois River from Starved Rock Lock and Dam downstream to confluence...

A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation...

Effective: 2026-04-17T13:46:00-05:00 · Expires: 2026-04-18T08:00:00-05:00

Met · Severe · Future

Flood Watch issued April 17 at 1:46PM CDT until April 21 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... Illinois River at Ottawa affecting La Salle zone. ...The Flood Watch is replaced by a River Flood Warning for the following rivers in Illinois... Illinois River at La Salle affecting La Salle, Bureau and Putnam zones. For the Illinois River (Upper)...including Ottawa, La Salle... floo...

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...

Effective: 2026-04-17T13:46:00-05:00 · Expires: 2026-04-18T08:00:00-05:00

Met · Severe · Immediate

Flood Warning issued April 18 at 5:48AM CDT by NWS Chicago IL

...The Flood Warning is extended for the following rivers in Illinois... Illinois River at La Salle affecting Bureau, Putnam and La Salle Counties. For the Illinois River (Upper)...including La Salle...Minor flooding is occurring. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Illinois River from Starved Rock Lock and Dam downstream to confluence with Big Bureau...

Effective: 2026-04-18T05:48:00-05:00 · Expires: 2026-04-19T00:00:00-05:00

Met · Severe · Expected

Flood Warning issued April 18 at 5:44AM CDT until April 21 at 1:00PM CDT by NWS Chicago IL

...The National Weather Service in Chicago IL has issued a Flood Warning for the following rivers in Illinois... Illinois River at Ottawa affecting La Salle County. For the Illinois River (Upper)...including Ottawa...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Illinois River from Heritage Harbor east of Ottawa downstream to Starved Rock Lock and Dam, including th...

Effective: 2026-04-18T05:44:00-05:00 · Expires: 2026-04-18T23:45:00-05:00

Today's Hourly Forecast

24-hour breakdown for Pontiac, Illinois

12 AM

17°

Patchy light drizzle

💧 92% 💨 48.2 km/h 🌧️ 100%

1 AM

17°

Moderate rain

💧 94% 💨 26.6 km/h 🌧️ 100%

2 AM

15°

Light rain

💧 94% 💨 28.4 km/h 🌧️ 100%

3 AM

13°

Light drizzle

💧 94% 💨 25.6 km/h 🌧️ 100%

4 AM

11°

Overcast

💧 93% 💨 26.3 km/h

5 AM

10°

Overcast

💧 88% 💨 24.1 km/h

6 AM

9°

Cloudy

💧 85% 💨 22.3 km/h

7 AM

8°

Sunny

💧 81% 💨 24.8 km/h

8 AM

7°

Sunny

💧 80% 💨 28.8 km/h

9 AM

6°

Partly cloudy

💧 70% 💨 29.5 km/h

10 AM

7°

Overcast

💧 79% 💨 27.4 km/h

11 AM

7°

Partly Cloudy

💧 77% 💨 29.2 km/h

12 PM

7°

Partly Cloudy

💧 71% 💨 29.5 km/h

1 PM

8°

Partly Cloudy

💧 70% 💨 28.8 km/h

2 PM

8°

Partly Cloudy

💧 67% 💨 29.9 km/h

3 PM

8°

Partly Cloudy

💧 64% 💨 29.9 km/h

4 PM

8°

Cloudy

💧 64% 💨 30.6 km/h

5 PM

8°

Cloudy

💧 62% 💨 31 km/h

6 PM

8°

Sunny

💧 61% 💨 28.8 km/h

7 PM

7°

Sunny

💧 66% 💨 28.8 km/h

8 PM

5°

Clear

💧 75% 💨 20.5 km/h

9 PM

5°

Clear

💧 80% 💨 13 km/h

10 PM

4°

Clear

💧 80% 💨 9.4 km/h

11 PM

5°

Clear

💧 76% 💨 9.7 km/h

3-Day Forecast

Daily overview for Pontiac, Illinois

Today

Moderate rain

9° / 4°

🌧️ 88% chance of rain

💧 Avg. humidity: 78%

💨 Max wind: 48.2 km/h

🌧️ Total precip: 6.31 mm

☀️ UV Index: 7

🌅 Sunrise: 06:11 AM

🌇 Sunset: 07:38 PM

🌙 Waxing Crescent

🌑 Moon: 1% lit

Sun, Apr 19

Partly Cloudy

15° / 4°

🌧️ 0% chance of rain

💧 Avg. humidity: 57%

💨 Max wind: 28.1 km/h

🌧️ Total precip: 0.01 mm

☀️ UV Index: 5.6

🌅 Sunrise: 06:09 AM

🌇 Sunset: 07:39 PM

🌙 Waxing Crescent

🌑 Moon: 3% lit

Mon, Apr 20

Sunny

14° / 2°

🌧️ 0% chance of rain

💧 Avg. humidity: 52%

💨 Max wind: 24.1 km/h

🌧️ Total precip: 0 mm

☀️ UV Index: 6.9

🌅 Sunrise: 06:08 AM

🌇 Sunset: 07:40 PM

🌙 Waxing Crescent

🌑 Moon: 9% 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: Partly cloudy, temperature 6°C, humidity 70%.

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.