Flash Flood Warning — DuPage County, IL, Will County, IL 9:30 PM Areal Flood Warning — Cook County, IL, DuPage County, IL, Kane County, IL, Kendall County, IL, Will County, IL 2:00 PM Flood Warning — DuPage County, IL, Will County, IL 1:00 AM

Will County, Illinois, United States

Last updated: 8:22 PM CDT  ·  Refresh
21°C
Feels like 23°
Mostly Cloudy
▲ 30°  /  ▼ 18°
Wind
6 mph E
Humidity
96%
Dew Point
21°
Pressure
29.22 inHg
Visibility
7 mi
UV Index
0.0
Cloud Cover
83%
Sunrise
5:23 AM
Sunset
8:28 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Will County is currently mostly cloudy at 21°C. Precipitation is likely — peak probability 56% around 8 PM. Atmospheric instability is elevated (CAPE up to 863 J/kg) — isolated convective development possible. Sunrise: 5:23AM · Sunset: 8:28PM.

Alerts

Flash Flood Warning
DuPage County, IL, Will County, IL
Expires 9:30 PM
Areal Flood Warning
Cook County, IL, DuPage County, IL, Kane County, IL, Kendall County, IL, Will County, IL
Expires 2:00 PM
Flood Warning
DuPage County, IL, Will County, IL
Expires 1:00 AM
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
56%
9 PM
22°
52%
10 PM
22°
43%
11 PM
22°
35%
12 AM
22°
41%
1 AM
20°
30%
2 AM
20°
32%
3 AM
20°
23%
4 AM
20°
14%
5 AM
18°
28%
6 AM
18°
32%
7 AM
19°
32%
8 AM
19°
37%
9 AM
21°
36%
10 AM
22°
17%
11 AM
23°
20%
12 PM
23°
30%
1 PM
26°
37%
2 PM
26°
37%
3 PM
26°
27%
4 PM
26°
27%
5 PM
25°
27%
6 PM
24°
5%
7 PM
24°
5%
7-Day Forecast
Tonight
30° 18°
Mostly Cloudy with a 56% chance of rain.
Sun
27° 18°
Mostly Cloudy with a 37% chance of rain.
Mon
26° 17°
Mostly Clear.
Tue
27° 16°
Clear.
Wed
27° 18°
Rain, 30% chance.
Thu
26° 18°
Rain, 90% chance.
Fri
26° 16°
Drizzle, 52% chance.
TimeTempConditionsPrecipWindHumidity
Now 21° Mostly Cloudy 56% 6 mph E 96%
9 PM 22° Mostly Cloudy 52% 6 mph ENE 97%
10 PM 22° Mostly Cloudy 43% 5 mph NE 98%
11 PM 22° Overcast 35% 5 mph NE 98%
12 AM 22° Overcast 41% 5 mph NNE 98%
1 AM 20° Overcast 30% 5 mph N 98%
2 AM 20° Overcast 32% 5 mph N 98%
3 AM 20° Overcast 23% 5 mph N 98%
4 AM 20° Overcast 14% 5 mph N 98%
5 AM 18° Overcast 28% 5 mph N 97%
6 AM 18° Overcast 32% 6 mph N 96%
7 AM 19° Rain 32% 6 mph N 94%
8 AM 19° Mostly Cloudy 37% 5 mph N 92%
9 AM 21° Mostly Cloudy 36% 6 mph N 90%
10 AM 22° Mostly Cloudy 17% 6 mph N 88%
11 AM 23° Mostly Cloudy 20% 7 mph N 86%
12 PM 23° Overcast 30% 8 mph NNE 84%
1 PM 26° Overcast 37% 8 mph NNE 82%
2 PM 26° Mostly Cloudy 37% 9 mph NNE 81%
3 PM 26° Mostly Cloudy 27% 10 mph NNE 80%
4 PM 26° Mostly Cloudy 27% 10 mph NNE 80%
5 PM 25° Mostly Cloudy 27% 10 mph NNE 81%
6 PM 24° Mostly Cloudy 5% 10 mph NNE 82%
7 PM 24° Mostly Cloudy 5% 9 mph NNE 83%
15-Day Forecast
Today
7/4
Mostly Cloudy
56%
18°
30°
Sun
7/5
Mostly Cloudy
37%
18°
27°
Mon
7/6
Mostly Clear
6%
17°
26°
Tue
7/7
Clear
3%
16°
27°
Wed
7/8
Rain
30%
18°
27°
Thu
7/9
Rain
90%
18°
26°
Fri
7/10
Drizzle
52%
16°
26°
Sat
7/11
Clear
53%
17°
26°
Sun
7/12
Drizzle
43%
14°
26°
Mon
7/13
Clear
44%
14°
27°
Tue
7/14
Drizzle
51%
18°
28°
Wed
7/15
Drizzle
60%
19°
29°
Thu
7/16
Drizzle
60%
19°
28°
Fri
7/17
Drizzle
60%
19°
28°
Sat
7/18
Drizzle
60%
19°
28°
53
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
53 AQI 10.4 µg/m³
O3
Ground-level ozone
39 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 53 Moderate 39 53
Mon 49 Good 46 49
Tue 58 Moderate 42 58
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Sat Jul 4, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE20 J/kg
MLCAPE169 J/kg
MUCAPE253 J/kg
SBCIN-136 J/kg
MLCIN0 J/kg
Lifted Index0.3
Kinematics
0–6 km Shear26 kt
0–1 km Shear3 kt
Eff. Shear24 kt
0–1 km SRH6
0–3 km SRH-27
Eff. SRH-41
Storm Motion205° @ 15 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.9
Thermo & Levels
PWAT1.95 in
0–3 km LR4.6 °C/km
700–500 LR5.1 °C/km
Total Totals44.2
LCL979 hPa
LFC710 hPa
EL583 hPa
Freezing Lvl14,747 ft