Frost Advisory — Knox, IL, Stark, IL, Peoria, IL, Marshall, IL, Woodford, IL, Fulton, IL, Tazewell, IL, Schuyler, IL, Mason, IL, Logan, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL 9:00 AM

Cass County, Illinois, United States

Last updated: 7:36 PM CDT  ·  Refresh
10°C
Feels like 7°
Partly Cloudy
▲ 12°  /  ▼ 1°
Wind
14 mph NNW
Humidity
76%
Dew Point
6°
Pressure
29.71 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
47%
Sunrise
7:11 AM
Sunset
6:19 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Cass County is currently partly cloudy at 10°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:11AM · Sunset: 6:19PM.

Alerts

Frost Advisory
Knox, IL, Stark, IL, Peoria, IL, Marshall, IL, Woodford, IL, Fulton, IL, Tazewell, IL, Schuyler, IL, Mason, IL, Logan, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL
Expires 9:00 AM
24 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
10°
12%
8 PM
11°
11%
9 PM
8°
6%
10 PM
8°
4%
11 PM
7°
4%
12 AM
7°
3%
1 AM
6°
3%
2 AM
6°
3%
3 AM
4°
3%
4 AM
4°
3%
5 AM
2°
3%
6 AM
1°
3%
7 AM
2°
3%
8 AM
3°
3%
9 AM
6°
3%
10 AM
8°
3%
11 AM
9°
3%
12 PM
11°
3%
1 PM
13°
3%
2 PM
14°
3%
3 PM
14°
3%
4 PM
14°
3%
5 PM
12°
3%
6 PM
11°
3%
7-Day Forecast
Tonight
12° 1°
Partly Cloudy.
Sat
15° 1°
Clear.
Sun
20° 3°
Clear.
Mon
23° 4°
Clear.
Tue
26° 8°
Partly Cloudy.
Wed
27° 9°
Partly Cloudy.
Thu
28° 10°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 10° Partly Cloudy 12% 14 mph NNW 76%
8 PM 11° Mostly Clear 11% 12 mph NNW 77%
9 PM 8° Mostly Clear 6% 11 mph NNW 77%
10 PM 8° Mostly Clear 4% 11 mph NNW 77%
11 PM 7° Clear 4% 11 mph N 77%
12 AM 7° Clear 3% 10 mph N 78%
1 AM 6° Clear 3% 9 mph N 79%
2 AM 6° Clear 3% 8 mph N 81%
3 AM 4° Clear 3% 8 mph N 83%
4 AM 4° Clear 3% 7 mph N 85%
5 AM 2° Clear 3% 6 mph N 86%
6 AM 1° Mostly Clear 3% 6 mph N 87%
7 AM 2° Mostly Clear 3% 5 mph N 83%
8 AM 3° Clear 3% 5 mph N 75%
9 AM 6° Clear 3% 4 mph NNE 65%
10 AM 8° Clear 3% 3 mph NE 58%
11 AM 9° Clear 3% 2 mph NE 52%
12 PM 11° Clear 3% 2 mph E 46%
1 PM 13° Clear 3% 2 mph SE 41%
2 PM 14° Clear 3% 2 mph S 38%
3 PM 14° Clear 3% 2 mph SSW 37%
4 PM 14° Clear 3% 2 mph SSW 38%
5 PM 12° Clear 3% 2 mph S 40%
6 PM 11° Clear 3% 3 mph S 43%
15-Day Forecast
Today
10/16
Partly Cloudy
12%
1°
12°
Sat
10/17
Clear
3%
1°
15°
Sun
10/18
Clear
3%
3°
20°
Mon
10/19
Clear
3%
4°
23°
Tue
10/20
Partly Cloudy
3%
8°
26°
Wed
10/21
Partly Cloudy
9%
9°
27°
Thu
10/22
Clear
9%
10°
28°
Fri
10/23
Clear
8%
12°
29°
Sat
10/24
Overcast
35%
12°
29°
Sun
10/25
Partly Cloudy
35%
9°
23°
Mon
10/26
Clear
25%
8°
22°
Tue
10/27
Drizzle
60%
8°
20°
Wed
10/28
Clear
60%
8°
21°
Thu
10/29
Drizzle
60%
9°
22°
Fri
10/30
Drizzle
60%
9°
20°
24
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
24 AQI 4.4 µg/m³
O3
Ground-level ozone
21 AQI 24 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 24 Good 21 24
Sun 29 Good 29 6
Mon 30 Good 30 25
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 Fri Oct 16, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE12 J/kg
MUCAPE43 J/kg
SBCIN—
MLCIN-24 J/kg
Lifted Index10.3
Kinematics
0–6 km Shear59 kt
0–1 km Shear24 kt
Eff. Shear—
0–1 km SRH126
0–3 km SRH109
Eff. SRH—
Storm Motion22° @ 34 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index12.1
Thermo & Levels
PWAT0.57 in
0–3 km LR6.1 °C/km
700–500 LR4.5 °C/km
Total Totals37.5
LCL955 hPa
LFC—
EL—
Freezing Lvl4,806 ft