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

Logan County, Illinois, United States

Last updated: 1:53 AM CDT  ·  Refresh
26°C
Feels like 27°
Clear
▲ 36°  /  ▼ 23°
Wind
7 mph SSW
Humidity
68%
Dew Point
20°
Pressure
29.33 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
0%
Sunrise
6:27 AM
Sunset
7:25 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Logan County is currently clear at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1898 J/kg) — isolated convective development possible. Sunrise: 6:27AM · Sunset: 7:25PM.

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
54 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
24°
3%
5 AM
23°
3%
6 AM
22°
3%
7 AM
24°
7%
8 AM
27°
15%
9 AM
29°
15%
10 AM
30°
15%
11 AM
31°
16%
12 PM
33°
16%
1 PM
36°
16%
2 PM
36°
17%
3 PM
36°
17%
4 PM
34°
17%
5 PM
36°
8%
6 PM
34°
3%
7 PM
33°
3%
8 PM
31°
3%
9 PM
28°
3%
10 PM
28°
3%
11 PM
27°
3%
12 AM
27°
3%
7-Day Forecast
Today
36° 23°
Clear.
Fri
39° 23°
Mostly Clear.
Sat
38° 23°
Partly Cloudy with a 26% chance of rain.
Sun
31° 18°
Fog.
Mon
33° 15°
Clear.
Tue
37° 18°
Clear.
Wed
41° 22°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 26° Clear 8% 7 mph SSW 68%
2 AM 25° Clear 8% 7 mph SSW 66%
3 AM 24° Clear 3% 6 mph SSW 69%
4 AM 24° Clear 3% 6 mph SSW 72%
5 AM 23° Clear 3% 6 mph S 75%
6 AM 22° Clear 3% 6 mph S 78%
7 AM 24° Clear 7% 7 mph SSW 73%
8 AM 27° Clear 15% 8 mph SW 66%
9 AM 29° Clear 15% 9 mph SW 60%
10 AM 30° Clear 15% 9 mph SW 55%
11 AM 31° Clear 16% 9 mph SW 51%
12 PM 33° Clear 16% 9 mph SW 47%
1 PM 36° Clear 16% 9 mph SW 44%
2 PM 36° Clear 17% 8 mph SW 42%
3 PM 36° Clear 17% 8 mph SW 41%
4 PM 34° Clear 17% 6 mph SSW 45%
5 PM 36° Clear 8% 6 mph S 52%
6 PM 34° Clear 3% 6 mph SSE 59%
7 PM 33° Clear 3% 6 mph SSE 61%
8 PM 31° Clear 3% 7 mph SSE 63%
9 PM 28° Clear 3% 7 mph S 64%
10 PM 28° Clear 3% 7 mph S 65%
11 PM 27° Clear 3% 7 mph S 66%
12 AM 27° Clear 3% 7 mph S 67%
15-Day Forecast
Today
9/3
Clear
17%
23°
36°
Fri
9/4
Mostly Clear
6%
23°
39°
Sat
9/5
Partly Cloudy
26%
23°
38°
Sun
9/6
Fog
16%
18°
31°
Mon
9/7
Clear
16%
15°
33°
Tue
9/8
Clear
17%
18°
37°
Wed
9/9
Clear
17%
22°
41°
Thu
9/10
Rain
68%
20°
38°
Fri
9/11
Drizzle
68%
19°
38°
Sat
9/12
Drizzle
66%
21°
38°
Sun
9/13
Drizzle
60%
19°
33°
Mon
9/14
Drizzle
60%
19°
33°
Tue
9/15
Drizzle
60%
18°
32°
Wed
9/16
Drizzle
60%
17°
31°
Thu
9/17
Drizzle
60%
17°
30°
54
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
54 AQI 10.6 µg/m³
O3
Ground-level ozone
42 AQI 45 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 54 Moderate 42 54
Fri 46 Good 40 46
Sat 43 Good 40 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 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE93 J/kg
MLCAPE251 J/kg
MUCAPE513 J/kg
SBCIN-556 J/kg
MLCIN-243 J/kg
Lifted Index-0.9
Kinematics
0–6 km Shear21 kt
0–1 km Shear8 kt
Eff. Shear16 kt
0–1 km SRH46
0–3 km SRH66
Eff. SRH-9
Storm Motion313° @ 13 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index25.9
Thermo & Levels
PWAT1.38 in
0–3 km LR5.3 °C/km
700–500 LR5.9 °C/km
Total Totals46.7
LCL908 hPa
LFC547 hPa
EL299 hPa
Freezing Lvl15,856 ft