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

Knox County, Illinois, United States

Last updated: 7:36 PM CDT  ·  Refresh
9°C
Feels like 7°
Partly Cloudy
▲ 12°  /  ▼ 1°
Wind
12 mph NNW
Humidity
75%
Dew Point
5°
Pressure
29.58 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
51%
Sunrise
7:12 AM
Sunset
6:18 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Knox County is currently partly cloudy at 9°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:12AM · Sunset: 6:18PM.

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
26 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
9°
12%
8 PM
9°
11%
9 PM
8°
4%
10 PM
7°
4%
11 PM
6°
4%
12 AM
6°
3%
1 AM
4°
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
7°
3%
10 AM
8°
3%
11 AM
9°
3%
12 PM
11°
3%
1 PM
13°
3%
2 PM
13°
3%
3 PM
14°
3%
4 PM
13°
3%
5 PM
11°
3%
6 PM
9°
3%
7-Day Forecast
Tonight
12° 1°
Partly Cloudy.
Sat
14° 1°
Clear.
Sun
18° 3°
Clear.
Mon
22° 5°
Clear.
Tue
24° 8°
Mostly Clear.
Wed
25° 9°
Mostly Clear.
Thu
26° 11°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 9° Partly Cloudy 12% 12 mph NNW 75%
8 PM 9° Mostly Clear 11% 12 mph NNW 74%
9 PM 8° Clear 4% 12 mph NNW 73%
10 PM 7° Clear 4% 11 mph N 75%
11 PM 6° Clear 4% 10 mph N 77%
12 AM 6° Clear 3% 9 mph N 79%
1 AM 4° Clear 3% 8 mph N 81%
2 AM 4° Clear 3% 7 mph N 83%
3 AM 3° Clear 3% 6 mph N 84%
4 AM 3° Clear 3% 5 mph N 85%
5 AM 2° Clear 3% 5 mph N 85%
6 AM 1° Clear 3% 5 mph NNW 86%
7 AM 2° Clear 3% 4 mph NNW 81%
8 AM 3° Clear 3% 3 mph NNW 73%
9 AM 7° Clear 3% 2 mph NNE 64%
10 AM 8° Clear 3% 2 mph NE 57%
11 AM 9° Clear 3% 2 mph SSW 51%
12 PM 11° Clear 3% 3 mph SSW 46%
1 PM 13° Clear 3% 4 mph SW 43%
2 PM 13° Clear 3% 4 mph SW 42%
3 PM 14° Clear 3% 5 mph SW 41%
4 PM 13° Clear 3% 5 mph SW 43%
5 PM 11° Clear 3% 5 mph SSW 46%
6 PM 9° Clear 3% 5 mph SSW 50%
15-Day Forecast
Today
10/16
Partly Cloudy
12%
1°
12°
Sat
10/17
Clear
3%
1°
14°
Sun
10/18
Clear
3%
3°
18°
Mon
10/19
Clear
3%
5°
22°
Tue
10/20
Mostly Clear
3%
8°
24°
Wed
10/21
Mostly Clear
5%
9°
25°
Thu
10/22
Clear
5%
11°
26°
Fri
10/23
Clear
3%
12°
27°
Sat
10/24
Overcast
35%
12°
27°
Sun
10/25
Mostly Clear
35%
8°
21°
Mon
10/26
Overcast
36%
7°
19°
Tue
10/27
Drizzle
60%
7°
18°
Wed
10/28
Clear
60%
7°
19°
Thu
10/29
Drizzle
60%
8°
20°
Fri
10/30
Drizzle
60%
8°
19°
26
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
26 AQI 4.6 µg/m³
O3
Ground-level ozone
22 AQI 25 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 26 Good 22 26
Sun 26 Good 26 6
Mon 29 Good 29 22
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
SBCAPE3 J/kg
MLCAPE6 J/kg
MUCAPE30 J/kg
SBCIN-112 J/kg
MLCIN-41 J/kg
Lifted Index12.2
Kinematics
0–6 km Shear56 kt
0–1 km Shear22 kt
Eff. Shear—
0–1 km SRH101
0–3 km SRH91
Eff. SRH—
Storm Motion23° @ 37 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index7.4
Thermo & Levels
PWAT0.46 in
0–3 km LR6.0 °C/km
700–500 LR4.1 °C/km
Total Totals34.2
LCL942 hPa
LFC830 hPa
EL789 hPa
Freezing Lvl4,341 ft