Illinois (Chicago)
Today
Today weather in Illinois
Thursday, October 15th, 2026
18°
Overcast
Low 15°
Mild temperatures are expected in Illinois Today, peaking at around 18 °F and dropping to 14 °F by night. It'll be quite breezy in Illinois Today with average wind speeds of 18 km/h. Heavy showers are forecasted, reaching up to 9.26 mm.
18° / 15°
Temp
85%
Rain
18 km/h
Wind
78%
Humidity
Illinois Weather Pages
Illinois hourly forecast for today
Scroll right to see more weather forecasts for Illinois today
| 12:00 AM | 01:00 AM | 02:00 AM | 03:00 AM | 04:00 AM | 05:00 AM | 06:00 AM | 07:00 AM | 07:03 AM | 08:00 AM | 09:00 AM | 10:00 AM | 11:00 AM | 12:00 PM | 01:00 PM | 02:00 PM | 03:00 PM | 04:00 PM | 05:00 PM | 06:00 PM | 06:09 PM | 07:00 PM | 08:00 PM | 09:00 PM | 10:00 PM | 11:00 PM | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| weather |  | | | |  | |  | |  | | | | |  |  | |  | | | |  |  |  | |  | | Next |
| temperatures | 16° | 15.7° | 15.6° | 15.5° | 14.9° | 14.7° | 14.7° | 14.6° | Sunrise | 14.8° | 15.2° | 15.6° | 16.3° | 16.9° | 16.1° | 16.1° | 16.6° | 16.7° | 17° | 17.5° | Sunset | 18.3° | 17.3° | 16.9° | 16.1° | 15.4° | |
| Feels like | 13.5° | 13.3° | 12.9° | 13° | 12.4° | 12.2° | 12.2° | 12.3° | 12.3° | 12.7° | 13.3° | 14.1° | 15.1° | 15.2° | 15.4° | 16.2° | 16.6° | 17.3° | 17.1° | 18.6° | 17.6° | 16° | 14.3° | 12.8° | |||
| wind speed | 14 km/h | 13 km/h | 14 km/h | 13 km/h | 12 km/h | 12 km/h | 12 km/h | 10 km/h | 12 km/h | 11 km/h | 11 km/h | 11 km/h | 10 km/h | 9 km/h | 9 km/h | 10 km/h | 9 km/h | 10 km/h | 14 km/h | 13 km/h | 10 km/h | 15 km/h | 17 km/h | 18 km/h | |||
| wind degree | 63° | 70° | 76° | 77° | 80° | 82° | 90° | 88° | 91° | 101° | 110° | 128° | 142° | 147° | 141° | 162° | 144° | 154° | 155° | 235° | 309° | 274° | 272° | 279° | |||
| wind direction | ENE | ENE | ENE | ENE | E | E | E | E | E | ESE | ESE | SE | SE | SSE | SE | SSE | SE | SSE | SSE | SW | NW | W | W | W | |||
| Precipitation | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 1.1 mm | 0.2 mm | 2.7 mm | 0.8 mm | 1.7 mm | 1.1 mm | 1.8 mm | 0 mm | 0 mm | 0 mm | 0 mm | |||
| chance for rain | 18% | 18% | 17% | 18% | 10% | 18% | 15% | 17% | 17% | 16% | 16% | 16% | 19% | 66% | 46% | 82% | 70% | 80% | 76% | 82% | 37% | 31% | 33% | 30% | |||
| chance for snow | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | |||
| humidity | 69% | 69% | 69% | 69% | 67% | 68% | 68% | 68% | 66% | 64% | 64% | 64% | 65% | 78% | 86% | 88% | 93% | 96% | 95% | 97% | 96% | 92% | 90% | 86% | |||
| dew point | 10.4° | 10° | 10° | 9.9° | 8.9° | 8.9° | 8.9° | 8.7° | 8.5° | 8.6° | 8.9° | 9.6° | 10.3° | 12.3° | 13.7° | 14.6° | 15.5° | 16.3° | 16.7° | 17.8° | 16.6° | 15.7° | 14.5° | 13.2° | |||
| visibility | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 9 km | 2 km | 7 km | 9 km | 9 km | 9 km | 9 km | 2 km | 10 km | 10 km | 10 km | |||
| cloud cover | 100% | 100% | 94% | 100% | 58% | 100% | 87% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 96% | 100% | 96% | 100% | 100% | 100% | |||
| UV | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 0.2 | 0.4 | 0.3 | 0.5 | 0.3 | 0.2 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
View of Illinois today
Explore Illinois live webcam feed to see how the weather is shaping up today in Illinois. See what people are wearing, check out the sky, and get a sense of the atmosphere before you step outside.
Stay informed and make the most of your day with our live weather updates from Illinois today.
Weather in Illinois today
The weather in Illinois today is expected to be noticeably warmer than usual, with a forecast temperature of 18 °F, compared to an average of 13.6 °F for October 15th in recent years.
temperatures
18 °F
rain
9.3 mm
wind
18 km/h
UV
Low
Illinois Today Weather Indexes for Outdoor Activities & Health
Live indexes for outdoor activities, pollen allergies, air quality (AQI), UV index and health in Illinois - Thursday, October 15th, 2026
UV Sun Exposure Risk
Low
1 / 11+
Air Quality Index (AQI)
Excellent
10 / 10
Pollen Allergy Risk
Low
4 / 10
Asthma Risk Index
Very Low
1 / 10
Arthritis Pain Index
Low
4 / 10
Outdoor Activity Index
Excellent
9 / 10
Running & Jogging Index
Excellent
8 / 10
Cycling Weather Index
Excellent
8 / 10
Pet Walking Index
Excellent
10 / 10
Fishing Conditions Index
Excellent
9 / 10
Gardening Weather Index
Excellent
9 / 10
Photography Light Index
Poor
2 / 10
Driving & Road Safety
Good
7 / 10
Construction Work Index
Excellent
8 / 10
Illinois daylight overview ☀️
Today in Illinois, The sun rises at 07:03 and sets at 18:09, giving a total daylight duration of 11 hours and 6 minutes.
Counties in Illinois
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Top locations in Illinois
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What to wear today in Illinois? clothing recommendations
Stay comfortably stylish - your tailored guide for today's Illinois forecast.
Long-sleeve shirt
Long pant
Closed-toe shoes
Light jacket
Umbrella
The weather today in Illinois - FAQ
What is the maximum temperature for today in Illinois?
The maximum temperature for today in Illinois is expected to be 18° degrees. Please dress accordingly to stay comfortable throughout the day.
Will it rain today in Illinois? 🌧️
Yes, there is a 85% chance of rain in Illinois today. We recommend carrying an umbrella or rain gear to stay dry.
What will be the wind speed today in Illinois? 🌀
The wind in Illinois is expected to blow at 18 km/h. This could affect outdoor activities, so plan accordingly.
How should I dress for the weather in Illinois today?
Given the forecast of 18 °F with a 85% chance of rain, we advise checking our "What to wear today" section for recommendations. There, you will find tailored advice to help you stay comfortable and prepared for the weather conditions in Illinois today.
What is the sunrise and sunset time for Illinois today?
The sun is expected to rise at 07:03 and set at 18:09 in Illinois.
How accurate is the weather forecast Illinois today? ✅
Illinois weather forecast for today is based on the most current and sophisticated meteorological models available. While we strive for accuracy, weather conditions can change unexpectedly, so we recommend checking for updates regularly.
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Where is Illinois?Get accurate weather forecasts for Illinois, located at latitude 41.85 and longitude -87.65. Stay updated with localized weather information tailored for Illinois.
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