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 8:00 PM Flood Warning — Will County, IL, Kane County, IL, Kendall County, IL 9:24 PM Flood Warning — Will County, IL 11:18 AM

Will County, Illinois, United States

Last updated: 9:22 PM CDT  ·  Refresh
21°C
Feels like 24°
Mostly Cloudy
▲ 30°  /  ▼ 18°
Wind
5 mph ENE
Humidity
97%
Dew Point
21°
Pressure
29.22 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
60%
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 61% around 9 PM. Atmospheric instability is elevated (CAPE up to 747 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 8:00 PM
Flood Warning
Will County, IL, Kane County, IL, Kendall County, IL
Expires 9:24 PM
Flood Warning
Will County, IL
Expires 11:18 AM
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
61%
10 PM
22°
43%
11 PM
22°
35%
12 AM
22°
39%
1 AM
20°
29%
2 AM
20°
30%
3 AM
20°
23%
4 AM
20°
23%
5 AM
18°
37%
6 AM
18°
33%
7 AM
19°
19%
8 AM
19°
24%
9 AM
21°
24%
10 AM
21°
30%
11 AM
22°
35%
12 PM
22°
49%
1 PM
24°
48%
2 PM
25°
48%
3 PM
25°
44%
4 PM
26°
44%
5 PM
24°
43%
6 PM
24°
21%
7 PM
23°
20%
8 PM
23°
20%
7-Day Forecast
Tonight
30° 18°
Mostly Cloudy with a 61% chance of rain.
Sun
27° 18°
Overcast with a 49% chance of rain.
Mon
26° 17°
Partly Cloudy.
Tue
27° 16°
Clear.
Wed
27° 18°
Rain, 37% chance.
Thu
26° 18°
Rain, 90% chance.
Fri
26° 16°
Drizzle, 52% chance.
TimeTempConditionsPrecipWindHumidity
Now 21° Mostly Cloudy 61% 5 mph ENE 97%
10 PM 22° Partly Cloudy 43% 5 mph NE 98%
11 PM 22° Mostly Cloudy 35% 5 mph NE 98%
12 AM 22° Overcast 39% 4 mph NNE 98%
1 AM 20° Overcast 29% 4 mph N 99%
2 AM 20° Overcast 30% 5 mph N 98%
3 AM 20° Overcast 23% 5 mph N 98%
4 AM 20° Overcast 23% 5 mph NNW 98%
5 AM 18° Overcast 37% 5 mph NNW 97%
6 AM 18° Overcast 33% 5 mph NNW 96%
7 AM 19° Overcast 19% 6 mph NNW 95%
8 AM 19° Overcast 24% 6 mph N 93%
9 AM 21° Overcast 24% 6 mph N 92%
10 AM 21° Overcast 30% 6 mph N 91%
11 AM 22° Overcast 35% 7 mph N 89%
12 PM 22° Overcast 49% 8 mph NNE 87%
1 PM 24° Overcast 48% 9 mph NNE 84%
2 PM 25° Mostly Cloudy 48% 10 mph NNE 82%
3 PM 25° Mostly Cloudy 44% 11 mph NNE 80%
4 PM 26° Partly Cloudy 44% 11 mph NNE 79%
5 PM 24° Mostly Cloudy 43% 11 mph NNE 80%
6 PM 24° Mostly Cloudy 21% 10 mph NNE 80%
7 PM 23° Mostly Cloudy 20% 10 mph NNE 81%
8 PM 23° Mostly Cloudy 20% 9 mph NNE 82%
15-Day Forecast
Today
7/4
Mostly Cloudy
61%
18°
30°
Sun
7/5
Overcast
49%
18°
27°
Mon
7/6
Partly Cloudy
6%
17°
26°
Tue
7/7
Clear
3%
16°
27°
Wed
7/8
Rain
37%
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
19%
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 Sun Jul 5, 01:00'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
SBCAPE25 J/kg
MLCAPE78 J/kg
MUCAPE352 J/kg
SBCIN-55 J/kg
MLCIN0 J/kg
Lifted Index-0.1
Kinematics
0–6 km Shear16 kt
0–1 km Shear10 kt
Eff. Shear11 kt
0–1 km SRH-17
0–3 km SRH-21
Eff. SRH-24
Storm Motion192° @ 17 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.4
Thermo & Levels
PWAT1.97 in
0–3 km LR4.6 °C/km
700–500 LR5.2 °C/km
Total Totals44.9
LCL982 hPa
LFC725 hPa
EL428 hPa
Freezing Lvl14,813 ft