Extreme 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 7:00 PM Heat Advisory — 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 7:00 PM

De Witt, Illinois

Last updated: 1:56 AM CDT  ·  Refresh
26°C
Feels like 27°
Clear
▲ 36°  /  ▼ 22°
Wind
7 mph SSW
Humidity
70%
Dew Point
20°
Pressure
29.19 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
3%
Sunrise
6:24 AM
Sunset
7:23 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: De Witt is currently clear at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2090 J/kg) — isolated convective development possible. Sunrise: 6:24AM · Sunset: 7:23PM.

Alerts

Extreme 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 7:00 PM
Heat Advisory
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 7:00 PM
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
8%
2 AM
25°
8%
3 AM
24°
3%
4 AM
23°
3%
5 AM
23°
3%
6 AM
22°
3%
7 AM
24°
7%
8 AM
27°
15%
9 AM
29°
15%
10 AM
31°
15%
11 AM
31°
16%
12 PM
34°
16%
1 PM
35°
16%
2 PM
35°
17%
3 PM
35°
17%
4 PM
36°
17%
5 PM
35°
8%
6 PM
33°
3%
7 PM
32°
3%
8 PM
28°
3%
9 PM
28°
3%
10 PM
27°
3%
11 PM
27°
3%
12 AM
27°
3%
7-Day Forecast
Today
36° 22°
Clear.
Fri
38° 22°
Clear.
Sat
37° 22°
Mostly Clear.
Sun
29° 17°
Overcast.
Mon
31° 15°
Clear.
Tue
35° 18°
Clear with a 30% chance of rain.
Wed
39° 22°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 26° Clear 8% 7 mph SSW 70%
2 AM 25° Clear 8% 7 mph SSW 68%
3 AM 24° Clear 3% 7 mph SSW 71%
4 AM 23° Clear 3% 6 mph SSW 74%
5 AM 23° Clear 3% 6 mph SSW 77%
6 AM 22° Clear 3% 6 mph SSW 80%
7 AM 24° Clear 7% 8 mph SSW 75%
8 AM 27° Clear 15% 9 mph SW 68%
9 AM 29° Clear 15% 10 mph SW 63%
10 AM 31° Clear 15% 10 mph SW 58%
11 AM 31° Clear 16% 10 mph SW 54%
12 PM 34° Mostly Clear 16% 10 mph WSW 50%
1 PM 35° Clear 16% 10 mph SW 49%
2 PM 35° Clear 17% 9 mph SW 47%
3 PM 35° Clear 17% 8 mph SW 46%
4 PM 36° Clear 17% 7 mph SW 52%
5 PM 35° Clear 8% 6 mph SSW 59%
6 PM 33° Clear 3% 5 mph SSW 66%
7 PM 32° Clear 3% 5 mph SSW 67%
8 PM 28° Clear 3% 6 mph S 69%
9 PM 28° Clear 3% 7 mph S 69%
10 PM 27° Clear 3% 7 mph S 69%
11 PM 27° Clear 3% 7 mph S 69%
12 AM 27° Clear 3% 7 mph S 69%
15-Day Forecast
Today
9/3
Clear
17%
22°
36°
Fri
9/4
Clear
16%
22°
38°
Sat
9/5
Mostly Clear
14%
22°
37°
Sun
9/6
Overcast
17%
17°
29°
Mon
9/7
Clear
8%
15°
31°
Tue
9/8
Clear
30%
18°
35°
Wed
9/9
Clear
17%
22°
39°
Thu
9/10
Drizzle
43%
20°
37°
Fri
9/11
Clear
44%
19°
38°
Sat
9/12
Drizzle
51%
20°
38°
Sun
9/13
Drizzle
60%
19°
32°
Mon
9/14
Drizzle
60%
19°
32°
Tue
9/15
Drizzle
60%
17°
31°
Wed
9/16
Drizzle
60%
16°
30°
Thu
9/17
Drizzle
60%
16°
29°
55
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
55 AQI 11.2 µg/m³
O3
Ground-level ozone
42 AQI 46 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 55 Moderate 42 55
Fri 46 Good 41 46
Sat 43 Good 41 43
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 Thu Sep 3, 05:00'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
SBCAPE277 J/kg
MLCAPE260 J/kg
MUCAPE455 J/kg
SBCIN-460 J/kg
MLCIN-240 J/kg
Lifted Index-1.4
Kinematics
0–6 km Shear22 kt
0–1 km Shear9 kt
Eff. Shear13 kt
0–1 km SRH50
0–3 km SRH57
Eff. SRH1
Storm Motion314° @ 15 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index27.4
Thermo & Levels
PWAT1.36 in
0–3 km LR5.3 °C/km
700–500 LR5.8 °C/km
Total Totals46.6
LCL917 hPa
LFC577 hPa
EL259 hPa
Freezing Lvl15,633 ft