Shelby County, Illinois, United States

Last updated: 12:12 AM CDT  ·  Refresh
25°C
Feels like 26°
Clear
▲ 38°  /  ▼ 23°
Wind
7 mph SSW
Humidity
66%
Dew Point
18°
Pressure
29.35 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
1%
Sunrise
6:23 AM
Sunset
7:25 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Shelby County is currently clear at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1417 J/kg) — isolated convective development possible. Sunrise: 6:23AM · Sunset: 7:25PM.

Alerts

No active alerts for this location.
56 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
11%
1 AM
25°
11%
2 AM
24°
11%
3 AM
24°
3%
4 AM
23°
3%
5 AM
22°
3%
6 AM
21°
3%
7 AM
22°
3%
8 AM
25°
3%
9 AM
28°
3%
10 AM
31°
3%
11 AM
32°
3%
12 PM
34°
3%
1 PM
37°
3%
2 PM
37°
3%
3 PM
37°
3%
4 PM
37°
3%
5 PM
38°
3%
6 PM
36°
3%
7 PM
34°
3%
8 PM
33°
3%
9 PM
29°
3%
10 PM
29°
3%
11 PM
26°
3%
7-Day Forecast
Today
38° 23°
Clear.
Wed
41° 23°
Clear.
Thu
41° 23°
Mostly Clear with a 32% chance of rain.
Fri
42° 23°
Clear with a 33% chance of rain.
Sat
42° 23°
Drizzle, 51% chance.
Sun
38° 19°
Rain, 29% chance.
Mon
38° 19°
Rain, 27% chance.
TimeTempConditionsPrecipWindHumidity
Now 25° Clear 11% 7 mph SSW 66%
1 AM 25° Clear 11% 7 mph SSW 63%
2 AM 24° Clear 11% 7 mph SSW 66%
3 AM 24° Clear 3% 7 mph SSW 70%
4 AM 23° Clear 3% 7 mph SSW 73%
5 AM 22° Clear 3% 7 mph SSW 74%
6 AM 21° Clear 3% 7 mph SSW 75%
7 AM 22° Clear 3% 7 mph SW 73%
8 AM 25° Clear 3% 8 mph SW 64%
9 AM 28° Clear 3% 10 mph WSW 55%
10 AM 31° Clear 3% 10 mph WSW 48%
11 AM 32° Clear 3% 10 mph WSW 45%
12 PM 34° Clear 3% 9 mph WSW 41%
1 PM 37° Clear 3% 9 mph WSW 38%
2 PM 37° Clear 3% 8 mph WSW 37%
3 PM 37° Clear 3% 7 mph WSW 35%
4 PM 37° Clear 3% 7 mph WSW 35%
5 PM 38° Clear 3% 6 mph SW 39%
6 PM 36° Clear 3% 6 mph SW 45%
7 PM 34° Clear 3% 6 mph SSW 50%
8 PM 33° Clear 3% 6 mph SSW 54%
9 PM 29° Clear 3% 6 mph SSW 58%
10 PM 29° Clear 3% 6 mph S 60%
11 PM 26° Clear 3% 7 mph S 62%
15-Day Forecast
Today
9/1
Clear
11%
23°
38°
Wed
9/2
Clear
3%
23°
41°
Thu
9/3
Mostly Clear
32%
23°
41°
Fri
9/4
Clear
33%
23°
42°
Sat
9/5
Drizzle
51%
23°
42°
Sun
9/6
Rain
29%
19°
38°
Mon
9/7
Rain
27%
19°
38°
Tue
9/8
Drizzle
44%
18°
38°
Wed
9/9
Drizzle
44%
14°
39°
Thu
9/10
Drizzle
51%
24°
44°
Fri
9/11
Drizzle
60%
20°
39°
Sat
9/12
Drizzle
60%
18°
33°
Sun
9/13
Drizzle
60%
17°
32°
Mon
9/14
Drizzle
60%
17°
32°
Tue
9/15
Drizzle
60%
16°
30°
56
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
56 AQI 11.8 µg/m³
O3
Ground-level ozone
49 AQI 54 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 56 Moderate 49 56
Wed 55 Moderate 54 55
Thu 50 Good 47 50
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 LCL0°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 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE22 J/kg
MUCAPE504 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index1.8
Kinematics
0–6 km Shear15 kt
0–1 km Shear7 kt
Eff. Shear—
0–1 km SRH31
0–3 km SRH49
Eff. SRH—
Storm Motion360° @ 12 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index18.1
Thermo & Levels
PWAT1.25 in
0–3 km LR3.7 °C/km
700–500 LR7.2 °C/km
Total Totals43.6
LCL898 hPa
LFC—
EL—
Freezing Lvl15,863 ft