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

Shelby County, Illinois, United States

Last updated: 5:13 AM CDT  ·  Refresh
25°C
Feels like 27°
Partly Cloudy
▲ 33°  /  ▼ 23°
Wind
8 mph SSW
Humidity
85%
Dew Point
23°
Pressure
29.33 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
31%
Sunrise
6:04 AM
Sunset
7:55 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Shelby County is currently partly cloudy at 25°C. Precipitation is likely — peak probability 51% around 8 PM. Atmospheric instability is elevated (CAPE up to 3899 J/kg) — isolated convective development possible. Sunrise: 6:04AM · Sunset: 7:55PM.

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
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
8%
6 AM
23°
25%
7 AM
24°
25%
8 AM
26°
25%
9 AM
27°
25%
10 AM
29°
27%
11 AM
30°
27%
12 PM
31°
28%
1 PM
33°
15%
2 PM
33°
22%
3 PM
33°
26%
4 PM
33°
41%
5 PM
33°
49%
6 PM
32°
50%
7 PM
31°
50%
8 PM
30°
51%
9 PM
28°
44%
10 PM
27°
27%
11 PM
27°
24%
12 AM
25°
25%
1 AM
25°
10%
2 AM
25°
13%
3 AM
24°
14%
4 AM
24°
24%
7-Day Forecast
Today
33° 23°
Partly Cloudy with a 51% chance of rain.
Wed
33° 23°
Partly Cloudy with a 79% chance of rain.
Thu
32° 22°
Mostly Cloudy with a 72% chance of rain.
Fri
29° 22°
Overcast with a 58% chance of rain.
Sat
32° 21°
Mostly Clear with a 27% chance of rain.
Sun
33° 21°
Drizzle, 47% chance.
Mon
29° 19°
Mostly Clear with a 47% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 25° Partly Cloudy 8% 8 mph SSW 85%
6 AM 23° Partly Cloudy 25% 8 mph SW 83%
7 AM 24° Partly Cloudy 25% 8 mph SW 83%
8 AM 26° Partly Cloudy 25% 10 mph SW 79%
9 AM 27° Partly Cloudy 25% 10 mph SW 74%
10 AM 29° Partly Cloudy 27% 11 mph WSW 70%
11 AM 30° Mostly Cloudy 27% 12 mph WSW 67%
12 PM 31° Partly Cloudy 28% 12 mph WSW 64%
1 PM 33° Partly Cloudy 15% 13 mph WSW 60%
2 PM 33° Partly Cloudy 22% 13 mph SW 58%
3 PM 33° Partly Cloudy 26% 13 mph SW 57%
4 PM 33° Partly Cloudy 41% 13 mph SW 56%
5 PM 33° Mostly Clear 49% 11 mph SW 61%
6 PM 32° Mostly Clear 50% 9 mph SSW 67%
7 PM 31° Partly Cloudy 50% 8 mph SSW 73%
8 PM 30° Mostly Clear 51% 6 mph SSW 75%
9 PM 28° Mostly Clear 44% 6 mph SW 76%
10 PM 27° Mostly Clear 27% 6 mph SW 77%
11 PM 27° Clear 24% 6 mph SW 78%
12 AM 25° Clear 25% 6 mph SW 80%
1 AM 25° Clear 10% 7 mph SW 81%
2 AM 25° Mostly Clear 13% 7 mph SW 81%
3 AM 24° Mostly Clear 14% 7 mph SSW 80%
4 AM 24° Partly Cloudy 24% 7 mph SSW 80%
15-Day Forecast
Today
8/11
Partly Cloudy
51%
23°
33°
Wed
8/12
Partly Cloudy
79%
23°
33°
Thu
8/13
Mostly Cloudy
72%
22°
32°
Fri
8/14
Overcast
58%
22°
29°
Sat
8/15
Mostly Clear
27%
21°
32°
Sun
8/16
Drizzle
47%
21°
33°
Mon
8/17
Mostly Clear
47%
19°
29°
Tue
8/18
Rain
53%
19°
31°
Wed
8/19
Mostly Cloudy
35%
22°
33°
Thu
8/20
Clear
35%
21°
34°
Fri
8/21
Drizzle
60%
19°
33°
Sat
8/22
Drizzle
60%
19°
31°
Sun
8/23
Drizzle
60%
19°
31°
Mon
8/24
Drizzle
60%
18°
29°
Tue
8/25
Drizzle
60%
18°
29°
52
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
52 AQI 9.6 µg/m³
O3
Ground-level ozone
42 AQI 45 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 52 Moderate 42 52
Wed 41 Good 41 32
Thu 40 Good 40 31
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
SBCAPE1981 J/kg
MLCAPE2333 J/kg
MUCAPE3155 J/kg
SBCIN-410 J/kg
MLCIN0 J/kg
Lifted Index-6.5
Kinematics
0–6 km Shear17 kt
0–1 km Shear20 kt
Eff. Shear20 kt
0–1 km SRH157
0–3 km SRH146
Eff. SRH95
Storm Motion318° @ 20 kt
0–1 km EHI1.9
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell3.0
K-Index28.0
Thermo & Levels
PWAT1.59 in
0–3 km LR4.3 °C/km
700–500 LR7.8 °C/km
Total Totals52.8
LCL960 hPa
LFC679 hPa
EL172 hPa
Freezing Lvl14,419 ft