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

Marshall County, Illinois, United States

Last updated: 8:26 PM CDT  ·  Refresh
9°C
Feels like 7°
Partly Cloudy
▲ 13°  /  ▼ 1°
Wind
10 mph N
Humidity
73%
Dew Point
5°
Pressure
29.63 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
46%
Sunrise
7:08 AM
Sunset
6:14 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Marshall County is currently partly cloudy at 9°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:08AM · Sunset: 6:14PM.

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
31 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
9°
12%
9 PM
8°
6%
10 PM
8°
6%
11 PM
7°
4%
12 AM
6°
4%
1 AM
5°
3%
2 AM
4°
3%
3 AM
3°
3%
4 AM
3°
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
13°
3%
3 PM
15°
3%
4 PM
14°
3%
5 PM
13°
3%
6 PM
12°
3%
7 PM
11°
3%
7-Day Forecast
Tonight
13° 1°
Partly Cloudy.
Sat
15° 1°
Clear.
Sun
18° 4°
Clear.
Mon
23° 4°
Mostly Clear.
Tue
24° 9°
Mostly Clear.
Wed
26° 10°
Mostly Cloudy.
Thu
27° 11°
Partly Cloudy.
TimeTempConditionsPrecipWindHumidity
Now 9° Partly Cloudy 12% 10 mph N 73%
9 PM 8° Mostly Clear 6% 11 mph N 73%
10 PM 8° Clear 6% 11 mph N 73%
11 PM 7° Clear 4% 10 mph N 74%
12 AM 6° Clear 4% 10 mph N 74%
1 AM 5° Clear 3% 9 mph N 76%
2 AM 4° Clear 3% 8 mph N 79%
3 AM 3° Clear 3% 7 mph N 82%
4 AM 3° Clear 3% 6 mph N 83%
5 AM 2° Clear 3% 6 mph NNW 84%
6 AM 1° Clear 3% 5 mph NNW 85%
7 AM 2° Clear 3% 5 mph NNW 83%
8 AM 3° Clear 3% 4 mph NNW 75%
9 AM 6° Clear 3% 4 mph N 66%
10 AM 8° Clear 3% 2 mph N 59%
11 AM 9° Clear 3% 2 mph SW 53%
12 PM 11° Clear 3% 3 mph SSW 48%
1 PM 13° Clear 3% 4 mph SW 44%
2 PM 13° Clear 3% 5 mph SW 42%
3 PM 15° Clear 3% 5 mph SW 40%
4 PM 14° Clear 3% 5 mph SW 41%
5 PM 13° Clear 3% 5 mph SW 44%
6 PM 12° Clear 3% 5 mph SSW 47%
7 PM 11° Clear 3% 5 mph SSW 49%
15-Day Forecast
Today
10/16
Partly Cloudy
12%
1°
13°
Sat
10/17
Clear
3%
1°
15°
Sun
10/18
Clear
3%
4°
18°
Mon
10/19
Mostly Clear
3%
4°
23°
Tue
10/20
Mostly Clear
5%
9°
24°
Wed
10/21
Mostly Cloudy
9%
10°
26°
Thu
10/22
Partly Cloudy
9%
11°
27°
Fri
10/23
Clear
3%
13°
28°
Sat
10/24
Overcast
15%
12°
27°
Sun
10/25
Mostly Cloudy
35%
10°
23°
Mon
10/26
Partly Cloudy
60%
8°
21°
Tue
10/27
Drizzle
60%
8°
20°
Wed
10/28
Clear
60%
7°
19°
Thu
10/29
Drizzle
60%
8°
21°
Fri
10/30
Drizzle
60%
9°
20°
31
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
31 AQI 5.5 µg/m³
O3
Ground-level ozone
22 AQI 24 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 31 Good 22 31
Sun 27 Good 27 12
Mon 33 Good 29 33
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 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
SBCAPE1 J/kg
MLCAPE5 J/kg
MUCAPE16 J/kg
SBCIN-94 J/kg
MLCIN0 J/kg
Lifted Index12.1
Kinematics
0–6 km Shear56 kt
0–1 km Shear25 kt
Eff. Shear—
0–1 km SRH71
0–3 km SRH69
Eff. SRH—
Storm Motion25° @ 39 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index8.3
Thermo & Levels
PWAT0.46 in
0–3 km LR6.2 °C/km
700–500 LR4.1 °C/km
Total Totals34.2
LCL937 hPa
LFC834 hPa
EL801 hPa
Freezing Lvl4,203 ft