Heat Advisory — Fulton, IL, Schuyler, IL, Mason, IL, Logan, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Macon, IL, Moultrie, IL, Coles, IL, Shelby, IL, Cumberland, IL, Clark, IL, Effingham, IL, Jasper, IL, Crawford, IL, Clay, IL, Richland, IL, Lawrence, IL 8:00 PM

Clark County, Illinois, United States

Last updated: 5:11 AM CDT  ·  Refresh
25°C
Feels like 27°
Mostly Clear
▲ 33°  /  ▼ 22°
Wind
8 mph SW
Humidity
85%
Dew Point
23°
Pressure
29.34 inHg
Visibility
8 mi
UV Index
0.0
Cloud Cover
23%
Sunrise
6:00 AM
Sunset
7:51 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Clark County is currently mostly clear at 25°C. Precipitation is likely — peak probability 52% around 6 PM. Atmospheric instability is elevated (CAPE up to 4110 J/kg) — isolated convective development possible. Sunrise: 6:00AM · Sunset: 7:51PM.

Alerts

Heat Advisory
Fulton, IL, Schuyler, IL, Mason, IL, Logan, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Macon, IL, Moultrie, IL, Coles, IL, Shelby, IL, Cumberland, IL, Clark, IL, Effingham, IL, Jasper, IL, Crawford, IL, Clay, IL, Richland, IL, Lawrence, IL
Expires 8:00 PM
49 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
8%
6 AM
24°
25%
7 AM
24°
25%
8 AM
26°
25%
9 AM
27°
30%
10 AM
28°
37%
11 AM
30°
37%
12 PM
31°
38%
1 PM
32°
41%
2 PM
32°
50%
3 PM
33°
40%
4 PM
32°
48%
5 PM
33°
52%
6 PM
32°
52%
7 PM
31°
50%
8 PM
29°
51%
9 PM
28°
42%
10 PM
27°
34%
11 PM
26°
27%
12 AM
24°
27%
1 AM
24°
10%
2 AM
24°
13%
3 AM
24°
16%
4 AM
24°
21%
7-Day Forecast
Today
33° 22°
Partly Cloudy with a 52% chance of rain.
Wed
32° 22°
Rain, 79% chance.
Thu
31° 22°
Mostly Cloudy with a 72% chance of rain.
Fri
29° 21°
Mostly Cloudy with a 55% chance of rain.
Sat
32° 20°
Partly Cloudy with a 27% chance of rain.
Sun
33° 21°
Clear with a 47% chance of rain.
Mon
29° 19°
Partly Cloudy with a 28% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 25° Mostly Clear 8% 8 mph SW 85%
6 AM 24° Mostly Clear 25% 8 mph SW 84%
7 AM 24° Mostly Clear 25% 9 mph SW 85%
8 AM 26° Mostly Clear 25% 10 mph SW 81%
9 AM 27° Partly Cloudy 30% 11 mph SW 77%
10 AM 28° Partly Cloudy 37% 12 mph WSW 74%
11 AM 30° Partly Cloudy 37% 12 mph WSW 71%
12 PM 31° Partly Cloudy 38% 12 mph WSW 68%
1 PM 32° Partly Cloudy 41% 12 mph WSW 65%
2 PM 32° Partly Cloudy 50% 12 mph SW 64%
3 PM 33° Partly Cloudy 40% 13 mph SW 64%
4 PM 32° Partly Cloudy 48% 12 mph SW 64%
5 PM 33° Partly Cloudy 52% 10 mph SW 70%
6 PM 32° Partly Cloudy 52% 7 mph SW 75%
7 PM 31° Partly Cloudy 50% 6 mph SSW 79%
8 PM 29° Mostly Clear 51% 8 mph S 79%
9 PM 28° Mostly Clear 42% 9 mph S 80%
10 PM 27° Mostly Clear 34% 9 mph S 80%
11 PM 26° Mostly Clear 27% 8 mph S 82%
12 AM 24° Clear 27% 7 mph S 84%
1 AM 24° Clear 10% 7 mph S 85%
2 AM 24° Mostly Clear 13% 8 mph S 86%
3 AM 24° Mostly Clear 16% 8 mph S 86%
4 AM 24° Mostly Clear 21% 8 mph SSW 86%
15-Day Forecast
Today
8/11
Partly Cloudy
52%
22°
33°
Wed
8/12
Rain
79%
22°
32°
Thu
8/13
Mostly Cloudy
72%
22°
31°
Fri
8/14
Mostly Cloudy
55%
21°
29°
Sat
8/15
Partly Cloudy
27%
20°
32°
Sun
8/16
Clear
47%
21°
33°
Mon
8/17
Partly Cloudy
28%
19°
29°
Tue
8/18
Rain
53%
18°
31°
Wed
8/19
Thunderstorm
35%
21°
33°
Thu
8/20
Clear
35%
21°
33°
Fri
8/21
Drizzle
60%
18°
33°
Sat
8/22
Drizzle
60%
19°
32°
Sun
8/23
Drizzle
60%
18°
31°
Mon
8/24
Drizzle
60%
18°
30°
Tue
8/25
Drizzle
60%
17°
30°
49
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
49 AQI 8.9 µg/m³
O3
Ground-level ozone
31 AQI 35 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 49 Good 31 49
Wed 30 Good 30 25
Thu 32 Good 32 25
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 Tue Aug 11, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2222 J/kg
MLCAPE2498 J/kg
MUCAPE2677 J/kg
SBCIN-330 J/kg
MLCIN0 J/kg
Lifted Index-6.6
Kinematics
0–6 km Shear18 kt
0–1 km Shear19 kt
Eff. Shear23 kt
0–1 km SRH148
0–3 km SRH156
Eff. SRH116
Storm Motion327° @ 17 kt
0–1 km EHI2.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell3.7
K-Index32.8
Thermo & Levels
PWAT1.69 in
0–3 km LR4.5 °C/km
700–500 LR7.5 °C/km
Total Totals53.3
LCL963 hPa
LFC693 hPa
EL169 hPa
Freezing Lvl14,318 ft