Illinois (Chicago)
Tomorrow
Tomorrow weather in Illinois
Monday, July 20th, 2026
30°
Sunny
Low 20°
Official weather alert: Meteorological - Air Quality Alert.The weather tomorrow in Illinois will be a bit hotter than today, with max temperatures of 29°.
The rain will visit again tomorrow in Illinois and the expected precipitation are 9 mm.
The wind tomorrow will get stronger and reach 33 km/h.
30° / 20°
Temp
69%
Rain
33 km/h
Wind
70%
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
| 00:00 | 01:00 | 02:00 | 03:00 | 04:00 | 05:00 | 05:33 | 06:00 | 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 20:20 | 21:00 | 22:00 | 23:00 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| weather |  | | | | | |  |  | |  | |  | | | |  |  | | | | | |  |  | | | Next |
| temperatures | 22.1° | 21.6° | 21.3° | 21° | 20.8° | 20.4° | Sunrise | 20.3° | 21.2° | 22.7° | 24.4° | 26.1° | 27.4° | 28.1° | 28.7° | 29.5° | 27.6° | 26.3° | 24.2° | 24° | 24° | 23° | Sunset | 22.5° | 22.2° | 23.4° | |
| feels like | 16.8° | 16.1° | 15.7° | 15.5° | 14.9° | 14.5° | 14.6° | 14.9° | 16.3° | 17.8° | 23.5° | 27.8° | 28.5° | 29.1° | 30° | 28.6° | 24.7° | 17.7° | 17.8° | 16° | 14.7° | 11.9° | 11.8° | 13.6° | |||
| wind speed | 7 km/h | 8 km/h | 8 km/h | 8 km/h | 9 km/h | 10 km/h | 9 km/h | 12 km/h | 13 km/h | 13 km/h | 14 km/h | 12 km/h | 13 km/h | 16 km/h | 18 km/h | 15 km/h | 13 km/h | 13 km/h | 11 km/h | 21 km/h | 22 km/h | 34 km/h | 33 km/h | 30 km/h | |||
| wind degree | 166° | 175° | 191° | 193° | 185° | 189° | 187° | 195° | 202° | 203° | 197° | 192° | 189° | 195° | 201° | 240° | 264° | 206° | 215° | 222° | 262° | 211° | 206° | 217° | |||
| wind direction | SSE | S | SSW | SSW | S | S | S | SSW | SSW | SSW | SSW | SSW | S | SSW | SSW | WSW | W | SSW | SW | SW | W | SSW | SSW | SW | |||
| 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 | 0.2 mm | 0.4 mm | 0.4 mm | 0.1 mm | 1.7 mm | 2.4 mm | 4.2 mm | 0 mm | 0 mm | |||
| chance for rain | 4% | 4% | 5% | 6% | 7% | 8% | 11% | 7% | 16% | 4% | 8% | 2% | 11% | 2% | 8% | 22% | 36% | 47% | 27% | 70% | 74% | 82% | 13% | 11% | |||
| 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 | 58% | 63% | 67% | 71% | 75% | 76% | 76% | 72% | 65% | 60% | 55% | 51% | 49% | 49% | 47% | 57% | 68% | 87% | 88% | 88% | 93% | 92% | 90% | 82% | |||
| dew point | 13.4° | 14.2° | 14.9° | 15.6° | 16.1° | 16.2° | 16° | 15.9° | 15.9° | 16.1° | 16.3° | 16.2° | 16.4° | 16.9° | 17.1° | 18.3° | 20° | 21.8° | 21.9° | 22° | 21.7° | 21.2° | 20.5° | 20.1° | |||
| 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 | 5 km | 10 km | 5 km | 10 km | 9 km | 9 km | 8 km | 10 km | 10 km | |||
| cloud cover | 19% | 10% | 4% | 4% | 2% | 0% | 39% | 20% | 100% | 17% | 71% | 3% | 96% | 16% | 75% | 77% | 84% | 61% | 76% | 71% | 57% | 71% | 5% | 14% | |||
| UV | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.3 | 1 | 2 | 3.5 | 3.7 | 2.7 | 3.4 | 2.4 | 4.6 | 3.3 | 1.9 | 0.8 | 0.2 | 0 | 0 | 0 | 0 |
Weather in Illinois tomorrow
The weather in Illinois tomorrow is expected to be slightly warmer than usual, with a forecast temperature of 30 °C, compared to an average of 26.8 °C for July 20th in recent years.
temperatures
30 °C
rain
9.4 mm
wind
33 km/h
UV
Moderate
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 - Monday, July 20th, 2026
UV Sun Exposure Risk
Moderate
5 / 11+
Air Quality Index (AQI)
Excellent
8 / 10
Pollen Allergy Risk
Very High
10 / 10
Asthma Risk Index
Low
4 / 10
Arthritis Pain Index
Very Low
1 / 10
Outdoor Activity Index
Good
6 / 10
Running & Jogging Index
Fair
5 / 10
Cycling Weather Index
Poor
3 / 10
Pet Walking Index
Good
6 / 10
Fishing Conditions Index
Excellent
9 / 10
Gardening Weather Index
Excellent
8 / 10
Photography Light Index
Good
6 / 10
Driving & Road Safety
Good
7 / 10
Construction Work Index
Fair
4 / 10
Illinois daylight overview ☀️
Tomorrow in Illinois, The sun rises at 05:33 and sets at 20:20, giving a total daylight duration of 14 hours and 47 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.
Short-sleeve shirt
Shorts
Lightweight trousers
Sunglasses
Wide brimmed hat
Sunscreen
Umbrella
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 30° degrees. Please dress accordingly to stay comfortable throughout the day.
Will it rain tomorrow in Illinois? 🌧️
Yes, there is a 69% 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 33 km/h. This could affect outdoor activities, so plan accordingly.
How should I dress for the weather in Illinois tomorrow?
Given the forecast of 30 °C with a 69% 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 05:33 and set at 20:20 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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