Illinois (Chicago)
Tomorrow
Tomorrow weather in Illinois
Sunday, August 23rd, 2026
25°
Sunny
Feels like 22° · Low 18°
The weather tomorrow in Illinois will be colder than today, with max temperatures of 24°.
The wind tomorrow will be much lighter compared to today and reach 14 km/h.
25° / 18°
Temp
3%
Rain
14 km/h
Wind
50%
Humidity
Illinois Tomorrow's Weather Forecast
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Illinois Weather Pages
Illinois hourly forecast for tomorrow
Scroll right to see more weather forecasts for Illinois tomorrow
| 12:00 AM | 01:00 AM | 02:00 AM | 03:00 AM | 04:00 AM | 05:00 AM | 06:00 AM | 06:07 AM | 07:00 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 | 07:00 PM | 07:39 PM | 08:00 PM | 09:00 PM | 10:00 PM | 11:00 PM | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| weather |  | | | | | |  |  | | | | | | | | | | | |  | |  | |  | | | Next |
| temperatures | 20.6° | 20° | 19.5° | 19° | 18.8° | 18.6° | 18.3° | Sunrise | 17.5° | 18.6° | 20.1° | 21.5° | 22.6° | 23.4° | 24.3° | 24.7° | 24.8° | 24.3° | 23.6° | 22.9° | 21.5° | Sunset | 19.6° | 18.9° | 18.5° | 18.4° | |
| Feels like | 19.3° | 18.1° | 17.4° | 17.3° | 17.5° | 17.6° | 17.6° | 16.4° | 16.6° | 17.4° | 18.5° | 19.4° | 20.4° | 21° | 21.4° | 21.7° | 21.6° | 21.4° | 21.3° | 20° | 18.1° | 17.4° | 17° | 17.9° | |||
| wind speed | 14 km/h | 14 km/h | 13 km/h | 11 km/h | 9 km/h | 7 km/h | 7 km/h | 8 km/h | 11 km/h | 12 km/h | 12 km/h | 13 km/h | 12 km/h | 13 km/h | 12 km/h | 12 km/h | 11 km/h | 9 km/h | 7 km/h | 7 km/h | 8 km/h | 8 km/h | 9 km/h | 5 km/h | |||
| wind degree | 40° | 34° | 38° | 32° | 24° | 5° | 339° | 339° | 354° | 5° | 19° | 29° | 32° | 39° | 43° | 47° | 53° | 55° | 60° | 76° | 99° | 135° | 161° | 103° | |||
| wind direction | NE | NE | NE | NNE | NNE | N | NNW | NNW | N | N | NNE | NNE | NNE | NE | NE | NE | NE | NE | ENE | ENE | E | SE | SSE | ESE | |||
| 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 | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | |||
| chance for rain | 5% | 4% | 3% | 4% | 4% | 5% | 7% | 5% | 3% | 1% | 1% | 1% | 1% | 1% | 1% | 1% | 1% | 1% | 5% | 8% | 4% | 12% | 14% | 4% | |||
| 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 | 66% | 63% | 60% | 61% | 61% | 63% | 65% | 66% | 58% | 47% | 38% | 36% | 34% | 32% | 30% | 31% | 34% | 37% | 39% | 45% | 52% | 56% | 60% | 64% | |||
| dew point | 14.1° | 12.8° | 11.5° | 11.4° | 11.3° | 11.5° | 11.7° | 11.1° | 10.3° | 8.3° | 6.8° | 6.8° | 6.7° | 6.4° | 6.2° | 6.6° | 7.4° | 7.9° | 8.4° | 9.1° | 9.4° | 9.9° | 10.5° | 11.5° | |||
| 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 | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | |||
| cloud cover | 0% | 0% | 0% | 0% | 1% | 12% | 35% | 5% | 4% | 0% | 5% | 0% | 0% | 0% | 4% | 5% | 0% | 4% | 64% | 78% | 37% | 92% | 100% | 3% | |||
| UV | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 0.8 | 2.1 | 3.9 | 5.7 | 7.1 | 7.5 | 6.8 | 5.2 | 3.4 | 1.7 | 0.6 | 0.1 | 0 | 0 | 0 | 0 |
Weather in Illinois tomorrow
The weather in Illinois tomorrow is expected to be noticeably cooler than usual, with a forecast temperature of 25 °F, compared to an average of 28.6 °F for August 23rd in recent years.
temperatures
25 °F
rain
0 mm
wind
14 km/h
UV
Very High
🌫️ Air quality, UV & pollen - Illinois Live AQI, UV index and pollen levels. Air Quality →
Illinois Tomorrow Weather Indexes for Outdoor Activities & Health
Weather indexes for tomorrow: outdoor activities, pollen allergies, air quality (AQI), UV index and health in Illinois - Sunday, August 23rd, 2026
UV Sun Exposure Risk
High
7 / 11+
Air Quality Index (AQI)
Excellent
10 / 10
Pollen Allergy Risk
Very High
10 / 10
Asthma Risk Index
Low
3 / 10
Arthritis Pain Index
Very Low
1 / 10
Outdoor Activity Index
Excellent
9 / 10
Running & Jogging Index
Good
7 / 10
Cycling Weather Index
Excellent
8 / 10
Pet Walking Index
Excellent
8 / 10
Fishing Conditions Index
Excellent
10 / 10
Gardening Weather Index
Excellent
10 / 10
Photography Light Index
Excellent
8 / 10
Driving & Road Safety
Excellent
9 / 10
Construction Work Index
Excellent
8 / 10
Illinois daylight overview ☀️
Tomorrow in Illinois, The sun rises at 06:07 and sets at 19:39, giving a total daylight duration of 13 hours and 32 minutes.
Counties in Illinois
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Top locations in Illinois
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What to wear tomorrow in Illinois? clothing recommendations
Stay comfortably stylish - your tailored guide for tomorrow's Illinois forecast.
Long-sleeve shirt
Long pant
Closed-toe shoes
Light jacket
The weather tomorrow in Illinois - FAQ
What is the maximum temperature for tomorrow in Illinois?
The maximum temperature for tomorrow in Illinois is expected to be 25° degrees. Please dress accordingly to stay comfortable throughout the day.
Will it rain tomorrow in Illinois? 🌧️
Yes, there is a 3% chance of rain in Illinois tomorrow. We recommend carrying an umbrella or rain gear to stay dry.
What will be the wind speed tomorrow in Illinois? 🌀
The wind in Illinois is expected to blow at 14 km/h. This could affect outdoor activities, so plan accordingly.
How should I dress for the weather in Illinois tomorrow?
Given the forecast of 25 °F with a 3% chance of rain, we advise checking our "What to wear tomorrow" section for recommendations. There, you will find tailored advice to help you stay comfortable and prepared for the weather conditions in Illinois tomorrow.
What is the sunrise and sunset time for Illinois tomorrow?
The sun is expected to rise at 06:07 and set at 19:39 in Illinois.
How accurate is the weather forecast Illinois tomorrow? ✅
Illinois weather forecast for tomorrow 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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