Heat Advisory — Knox, IL, Stark, IL, Peoria, IL, Fulton, IL, Tazewell, IL, Schuyler, IL, Mason, IL, Logan, IL, De Witt, IL, Piatt, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Macon, IL, Moultrie, IL, Douglas, IL, Coles, IL, Shelby, IL, Cumberland, IL, Clark, IL, Effingham, IL, Jasper, IL, Crawford, IL, Clay, IL, Richland, IL, Lawrence, IL, Marshall, IL, Woodford, IL, McLean, IL, Champaign, IL, Vermilion, IL, Edgar, IL 7:00 PM

Stark County, Illinois, United States

Last updated: 11:43 PM CDT  ·  Refresh
26°C
Feels like 28°
Mostly Clear
▲ 31°  /  ▼ 22°
Wind
5 mph SSW
Humidity
78%
Dew Point
22°
Pressure
29.19 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
23%
Sunrise
6:25 AM
Sunset
7:33 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Stark County is currently mostly clear at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2835 J/kg) — isolated convective development possible. Sunrise: 6:25AM · Sunset: 7:33PM.

Alerts

Heat Advisory
Knox, IL, Stark, IL, Peoria, IL, Fulton, IL, Tazewell, IL, Schuyler, IL, Mason, IL, Logan, IL, De Witt, IL, Piatt, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Macon, IL, Moultrie, IL, Douglas, IL, Coles, IL, Shelby, IL, Cumberland, IL, Clark, IL, Effingham, IL, Jasper, IL, Crawford, IL, Clay, IL, Richland, IL, Lawrence, IL, Marshall, IL, Woodford, IL, McLean, IL, Champaign, IL, Vermilion, IL, Edgar, IL
Expires 7:00 PM
61 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
8%
12 AM
25°
8%
1 AM
25°
8%
2 AM
24°
8%
3 AM
24°
8%
4 AM
23°
8%
5 AM
22°
8%
6 AM
22°
5%
7 AM
23°
13%
8 AM
26°
17%
9 AM
27°
17%
10 AM
29°
3%
11 AM
30°
3%
12 PM
32°
3%
1 PM
33°
3%
2 PM
33°
3%
3 PM
33°
3%
4 PM
33°
3%
5 PM
33°
3%
6 PM
32°
3%
7 PM
31°
3%
8 PM
30°
3%
9 PM
28°
3%
10 PM
28°
3%
7-Day Forecast
Tonight
31° 22°
Mostly Clear.
Tue
34° 22°
Partly Cloudy.
Wed
36° 22°
Clear.
Thu
33° 23°
Partly Cloudy with a 43% chance of rain.
Fri
34° 23°
Fog with a 44% chance of rain.
Sat
34° 23°
Clear.
Sun
32° 21°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 26° Mostly Clear 8% 5 mph SSW 78%
12 AM 25° Mostly Clear 8% 6 mph SSW 71%
1 AM 25° Partly Cloudy 8% 6 mph SW 72%
2 AM 24° Partly Cloudy 8% 6 mph SW 73%
3 AM 24° Partly Cloudy 8% 6 mph SW 75%
4 AM 23° Partly Cloudy 8% 6 mph SW 77%
5 AM 22° Partly Cloudy 8% 6 mph SW 80%
6 AM 22° Partly Cloudy 5% 6 mph SW 82%
7 AM 23° Partly Cloudy 13% 6 mph SW 80%
8 AM 26° Partly Cloudy 17% 7 mph SW 76%
9 AM 27° Partly Cloudy 17% 7 mph SW 72%
10 AM 29° Partly Cloudy 3% 7 mph SW 68%
11 AM 30° Partly Cloudy 3% 8 mph SW 63%
12 PM 32° Partly Cloudy 3% 8 mph SW 59%
1 PM 33° Partly Cloudy 3% 8 mph SW 56%
2 PM 33° Partly Cloudy 3% 9 mph WSW 55%
3 PM 33° Mostly Clear 3% 9 mph WSW 54%
4 PM 33° Mostly Clear 3% 8 mph SW 57%
5 PM 33° Mostly Clear 3% 6 mph SW 63%
6 PM 32° Clear 3% 7 mph SSW 68%
7 PM 31° Clear 3% 7 mph SSW 70%
8 PM 30° Clear 3% 7 mph SSW 71%
9 PM 28° Clear 3% 7 mph SSW 73%
10 PM 28° Clear 3% 7 mph SSW 72%
15-Day Forecast
Today
8/31
Mostly Clear
8%
22°
31°
Tue
9/1
Partly Cloudy
17%
22°
34°
Wed
9/2
Clear
7%
22°
36°
Thu
9/3
Partly Cloudy
43%
23°
33°
Fri
9/4
Fog
44%
23°
34°
Sat
9/5
Clear
19%
23°
34°
Sun
9/6
Clear
19%
21°
32°
Mon
9/7
Clear
19%
19°
31°
Tue
9/8
Drizzle
60%
18°
32°
Wed
9/9
Drizzle
60%
20°
33°
Thu
9/10
Drizzle
60%
18°
30°
Fri
9/11
Drizzle
60%
18°
29°
Sat
9/12
Drizzle
60%
16°
27°
Sun
9/13
Drizzle
60%
15°
26°
Mon
9/14
Drizzle
60%
16°
26°
61
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
61 AQI 14.4 µg/m³
O3
Ground-level ozone
35 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 61 Moderate 35 61
Wed 63 Moderate 37 63
Thu 55 Moderate 37 55
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 Sep 1, 03:00'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
SBCAPE1191 J/kg
MLCAPE1070 J/kg
MUCAPE1713 J/kg
SBCIN-474 J/kg
MLCIN-298 J/kg
Lifted Index-3.5
Kinematics
0–6 km Shear34 kt
0–1 km Shear27 kt
Eff. Shear22 kt
0–1 km SRH188
0–3 km SRH162
Eff. SRH7
Storm Motion297° @ 26 kt
0–1 km EHI1.4
Composite Parameters
Sig. Tornado0.9
STP (eff)0.0
Supercell0.1
K-Index37.7
Thermo & Levels
PWAT1.85 in
0–3 km LR4.4 °C/km
700–500 LR6.7 °C/km
Total Totals48.4
LCL943 hPa
LFC655 hPa
EL177 hPa
Freezing Lvl15,276 ft