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

Sangamon County, Illinois, United States

Last updated: 1:53 AM CDT  ·  Refresh
27°C
Feels like 28°
Clear
▲ 37°  /  ▼ 23°
Wind
7 mph SSW
Humidity
64%
Dew Point
20°
Pressure
29.33 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
0%
Sunrise
6:28 AM
Sunset
7:26 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Sangamon County is currently clear at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1415 J/kg) — isolated convective development possible. Sunrise: 6:28AM · Sunset: 7:26PM.

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
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
8%
2 AM
26°
8%
3 AM
25°
3%
4 AM
24°
3%
5 AM
23°
3%
6 AM
23°
3%
7 AM
25°
3%
8 AM
28°
3%
9 AM
31°
3%
10 AM
32°
3%
11 AM
33°
3%
12 PM
34°
3%
1 PM
36°
3%
2 PM
37°
3%
3 PM
37°
3%
4 PM
36°
3%
5 PM
36°
3%
6 PM
35°
3%
7 PM
34°
3%
8 PM
33°
3%
9 PM
29°
3%
10 PM
28°
3%
11 PM
28°
3%
12 AM
28°
3%
7-Day Forecast
Today
37° 23°
Clear.
Fri
41° 23°
Clear.
Sat
41° 23°
Mostly Clear.
Sun
33° 18°
Fog.
Mon
36° 14°
Clear.
Tue
39° 18°
Clear.
Wed
43° 23°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 27° Clear 8% 7 mph SSW 64%
2 AM 26° Clear 8% 7 mph SSW 63%
3 AM 25° Clear 3% 6 mph SSW 66%
4 AM 24° Clear 3% 6 mph SSW 69%
5 AM 23° Clear 3% 6 mph SSW 72%
6 AM 23° Clear 3% 7 mph SSW 74%
7 AM 25° Clear 3% 8 mph SW 68%
8 AM 28° Clear 3% 9 mph SW 60%
9 AM 31° Clear 3% 10 mph SW 53%
10 AM 32° Clear 3% 10 mph SW 49%
11 AM 33° Clear 3% 9 mph SW 45%
12 PM 34° Clear 3% 9 mph SW 41%
1 PM 36° Clear 3% 9 mph SW 40%
2 PM 37° Mostly Clear 3% 9 mph SSW 38%
3 PM 37° Mostly Clear 3% 9 mph SSW 37%
4 PM 36° Mostly Clear 3% 8 mph SSW 39%
5 PM 36° Clear 3% 7 mph S 43%
6 PM 35° Clear 3% 6 mph S 48%
7 PM 34° Clear 3% 7 mph S 52%
8 PM 33° Clear 3% 7 mph S 56%
9 PM 29° Clear 3% 8 mph S 59%
10 PM 28° Clear 3% 7 mph S 61%
11 PM 28° Clear 3% 7 mph S 63%
12 AM 28° Clear 3% 7 mph S 65%
15-Day Forecast
Today
9/3
Clear
8%
23°
37°
Fri
9/4
Clear
12%
23°
41°
Sat
9/5
Mostly Clear
14%
23°
41°
Sun
9/6
Fog
16%
18°
33°
Mon
9/7
Clear
16%
14°
36°
Tue
9/8
Clear
17%
18°
39°
Wed
9/9
Clear
17%
23°
43°
Thu
9/10
Rain
68%
21°
40°
Fri
9/11
Drizzle
68%
20°
39°
Sat
9/12
Drizzle
66%
21°
39°
Sun
9/13
Drizzle
60%
20°
34°
Mon
9/14
Drizzle
60%
20°
34°
Tue
9/15
Drizzle
60%
18°
33°
Wed
9/16
Drizzle
60%
17°
32°
Thu
9/17
Drizzle
60%
17°
31°
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 10.2 µg/m³
O3
Ground-level ozone
46 AQI 51 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 53 Moderate 46 53
Fri 44 Good 44 44
Sat 44 Good 43 44
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 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE142 J/kg
MLCAPE257 J/kg
MUCAPE476 J/kg
SBCIN-519 J/kg
MLCIN-236 J/kg
Lifted Index-1.2
Kinematics
0–6 km Shear17 kt
0–1 km Shear9 kt
Eff. Shear17 kt
0–1 km SRH49
0–3 km SRH69
Eff. SRH-1
Storm Motion315° @ 12 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index28.4
Thermo & Levels
PWAT1.38 in
0–3 km LR5.7 °C/km
700–500 LR5.8 °C/km
Total Totals46.5
LCL898 hPa
LFC552 hPa
EL273 hPa
Freezing Lvl15,971 ft