Severe Thunderstorm Watch 10:00 PM Severe Thunderstorm Watch 10:00 PM Heat Advisory — Vermilion, IL, Edgar, IL, Clark, IL, Knox, IL, Stark, IL, Peoria, IL, Fulton, IL, Tazewell, IL, Schuyler, IL, Mason, IL, Logan, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Marshall, IL, Woodford, IL, McLean, IL, De Witt, IL, Piatt, IL, Macon, IL, Moultrie, IL, Shelby, IL, Effingham, IL, Clay, IL, Richland, IL, Champaign, IL, Douglas, IL, Coles, IL, Cumberland, IL, Jasper, IL, Crawford, IL, Lawrence, IL 9:00 PM Excessive Heat Warning — Knox, IL, Stark, IL, Peoria, IL, Marshall, IL, Woodford, IL, Fulton, IL, Tazewell, IL, McLean, IL, Schuyler, IL, Mason, IL, Logan, IL, De Witt, IL, Piatt, IL, Champaign, IL, Vermilion, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Macon, IL, Moultrie, IL, Douglas, IL, Coles, IL, Edgar, IL, Shelby, IL, Cumberland, IL, Clark, IL, Effingham, IL, Jasper, IL, Crawford, IL, Clay, IL, Richland, IL, Lawrence, IL 9:00 PM Heat Advisory — Marshall, IL, Woodford, IL, McLean, IL, De Witt, IL, Piatt, IL, Macon, IL, Moultrie, IL, Shelby, IL, Effingham, IL, Clay, IL, Richland, IL, Champaign, IL, Douglas, IL, Coles, IL, Cumberland, IL, Jasper, IL, Crawford, IL, Lawrence, IL, Knox, IL, Stark, IL, Peoria, IL, Fulton, IL, Tazewell, IL, Schuyler, IL, Mason, IL, Logan, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Vermilion, IL, Edgar, IL, Clark, IL 9:00 PM Flash Flood Warning — Clark County, IL, Edgar County, IL 10:00 PM

Clark County, Illinois, United States

Last updated: 8:19 PM CDT  ·  Refresh
28°C
Feels like 32°
Partly Cloudy
▲ 33°  /  ▼ 22°
Wind
6 mph SSW
Humidity
86%
Dew Point
25°
Pressure
29.13 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
54%
Sunrise
5:46 AM
Sunset
8:07 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Clark County is currently partly cloudy at 28°C. Precipitation is likely — peak probability 51% around 8 PM. Atmospheric instability is elevated (CAPE up to 2820 J/kg) — isolated convective development possible. Sunrise: 5:46AM · Sunset: 8:07PM.

Alerts

Severe Thunderstorm Watch
Expires 10:00 PM
Severe Thunderstorm Watch
Expires 10:00 PM
Heat Advisory
Vermilion, IL, Edgar, IL, Clark, IL, Knox, IL, Stark, IL, Peoria, IL, Fulton, IL, Tazewell, IL, Schuyler, IL, Mason, IL, Logan, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Marshall, IL, Woodford, IL, McLean, IL, De Witt, IL, Piatt, IL, Macon, IL, Moultrie, IL, Shelby, IL, Effingham, IL, Clay, IL, Richland, IL, Champaign, IL, Douglas, IL, Coles, IL, Cumberland, IL, Jasper, IL, Crawford, IL, Lawrence, IL
Expires 9:00 PM
Excessive Heat Warning
Knox, IL, Stark, IL, Peoria, IL, Marshall, IL, Woodford, IL, Fulton, IL, Tazewell, IL, McLean, IL, Schuyler, IL, Mason, IL, Logan, IL, De Witt, IL, Piatt, IL, Champaign, IL, Vermilion, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Macon, IL, Moultrie, IL, Douglas, IL, Coles, IL, Edgar, IL, Shelby, IL, Cumberland, IL, Clark, IL, Effingham, IL, Jasper, IL, Crawford, IL, Clay, IL, Richland, IL, Lawrence, IL
Expires 9:00 PM
Heat Advisory
Marshall, IL, Woodford, IL, McLean, IL, De Witt, IL, Piatt, IL, Macon, IL, Moultrie, IL, Shelby, IL, Effingham, IL, Clay, IL, Richland, IL, Champaign, IL, Douglas, IL, Coles, IL, Cumberland, IL, Jasper, IL, Crawford, IL, Lawrence, IL, Knox, IL, Stark, IL, Peoria, IL, Fulton, IL, Tazewell, IL, Schuyler, IL, Mason, IL, Logan, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Vermilion, IL, Edgar, IL, Clark, IL
Expires 9:00 PM
Flash Flood Warning
Clark County, IL, Edgar County, IL
Expires 10:00 PM
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
50%
9 PM
27°
31%
10 PM
26°
23%
11 PM
26°
23%
12 AM
26°
16%
1 AM
26°
4%
2 AM
26°
4%
3 AM
26°
4%
4 AM
26°
3%
5 AM
24°
3%
6 AM
24°
3%
7 AM
24°
3%
8 AM
24°
3%
9 AM
26°
3%
10 AM
26°
3%
11 AM
27°
3%
12 PM
28°
3%
1 PM
28°
3%
2 PM
28°
3%
3 PM
31°
3%
4 PM
31°
3%
5 PM
29°
3%
6 PM
29°
3%
7 PM
28°
3%
7-Day Forecast
Tonight
33° 22°
Partly Cloudy with a 50% chance of rain.
Tue
31° 17°
Partly Cloudy.
Wed
27° 14°
Clear.
Thu
28° 17°
Clear.
Fri
24° 19°
Rain, 82% chance.
Sat
24° 18°
Rain, 90% chance.
Sun
26° 16°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 28° Partly Cloudy 50% 6 mph SSW 86%
9 PM 27° Partly Cloudy 31% 8 mph S 86%
10 PM 26° Partly Cloudy 23% 9 mph SSW 85%
11 PM 26° Mostly Clear 23% 8 mph SW 84%
12 AM 26° Mostly Cloudy 16% 8 mph SW 82%
1 AM 26° Mostly Cloudy 4% 9 mph WSW 81%
2 AM 26° Partly Cloudy 4% 9 mph WSW 82%
3 AM 26° Partly Cloudy 4% 9 mph W 82%
4 AM 26° Partly Cloudy 3% 9 mph W 84%
5 AM 24° Partly Cloudy 3% 8 mph WNW 87%
6 AM 24° Partly Cloudy 3% 9 mph WNW 90%
7 AM 24° Partly Cloudy 3% 10 mph NW 90%
8 AM 24° Partly Cloudy 3% 10 mph NNW 88%
9 AM 26° Mostly Cloudy 3% 11 mph N 86%
10 AM 26° Mostly Cloudy 3% 11 mph N 82%
11 AM 27° Partly Cloudy 3% 12 mph N 78%
12 PM 28° Partly Cloudy 3% 12 mph N 75%
1 PM 28° Partly Cloudy 3% 12 mph N 72%
2 PM 28° Partly Cloudy 3% 12 mph N 72%
3 PM 31° Partly Cloudy 3% 12 mph N 71%
4 PM 31° Partly Cloudy 3% 11 mph N 72%
5 PM 29° Partly Cloudy 3% 11 mph N 74%
6 PM 29° Partly Cloudy 3% 10 mph N 77%
7 PM 28° Partly Cloudy 3% 10 mph N 79%
15-Day Forecast
Today
7/27
Partly Cloudy
50%
22°
33°
Tue
7/28
Partly Cloudy
4%
17°
31°
Wed
7/29
Clear
3%
14°
27°
Thu
7/30
Clear
7%
17°
28°
Fri
7/31
Rain
82%
19°
24°
Sat
8/1
Rain
90%
18°
24°
Sun
8/2
Clear
17%
16°
26°
Mon
8/3
Clear
17%
17°
28°
Tue
8/4
Drizzle
44%
18°
28°
Wed
8/5
Rain
68%
21°
29°
Thu
8/6
Drizzle
36%
19°
32°
Fri
8/7
Drizzle
60%
19°
32°
Sat
8/8
Drizzle
60%
19°
27°
Sun
8/9
Drizzle
60%
19°
28°
Mon
8/10
Drizzle
60%
19°
28°
51
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
51 AQI 9.3 µg/m³
O3
Ground-level ozone
28 AQI 30 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 51 Moderate 28 51
Wed 52 Moderate 31 52
Thu 32 Good 32 32
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 Mon Jul 27, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2789 J/kg
MLCAPE3523 J/kg
MUCAPE4103 J/kg
SBCIN-136 J/kg
MLCIN0 J/kg
Lifted Index-7.3
Kinematics
0–6 km Shear49 kt
0–1 km Shear21 kt
Eff. Shear50 kt
0–1 km SRH186
0–3 km SRH152
Eff. SRH152
Storm Motion276° @ 36 kt
0–1 km EHI3.2
Composite Parameters
Sig. Tornado4.7
STP (eff)1.7
Supercell16.0
K-Index36.1
Thermo & Levels
PWAT2.16 in
0–3 km LR5.2 °C/km
700–500 LR6.7 °C/km
Total Totals50.7
LCL947 hPa
LFC749 hPa
EL149 hPa
Freezing Lvl15,062 ft