Frost Advisory — Greene, IL, Macoupin, IL, Montgomery, IL, Adams, IL, Brown, IL, Pike, IL, Calhoun, IL, Jersey, IL, Knox, MO, Lewis, MO, Shelby, MO, Marion, MO, Monroe, MO, Ralls, MO, Pike, MO, Audrain, MO, Lincoln, MO 9:00 AM

Jersey County, Illinois, United States

Last updated: 8:27 PM CDT  ·  Refresh
10°C
Feels like 5°
Mostly Cloudy
▲ 12°  /  ▼ 2°
Wind
14 mph NNW
Humidity
78%
Dew Point
7°
Pressure
29.73 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
64%
Sunrise
7:11 AM
Sunset
6:21 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jersey County is currently mostly cloudy at 10°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:11AM · Sunset: 6:21PM.

Alerts

Frost Advisory
Greene, IL, Macoupin, IL, Montgomery, IL, Adams, IL, Brown, IL, Pike, IL, Calhoun, IL, Jersey, IL, Knox, MO, Lewis, MO, Shelby, MO, Marion, MO, Monroe, MO, Ralls, MO, Pike, MO, Audrain, MO, Lincoln, MO
Expires 9:00 AM
24 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
10°
31%
9 PM
10°
6%
10 PM
9°
6%
11 PM
9°
4%
12 AM
8°
4%
1 AM
7°
3%
2 AM
7°
3%
3 AM
6°
3%
4 AM
6°
3%
5 AM
3°
3%
6 AM
2°
3%
7 AM
2°
3%
8 AM
4°
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
14°
3%
5 PM
12°
3%
6 PM
12°
3%
7 PM
11°
3%
7-Day Forecast
Tonight
12° 2°
Mostly Cloudy with a 31% chance of rain.
Sat
15° 2°
Clear.
Sun
20° 4°
Clear.
Mon
23° 4°
Clear.
Tue
25° 8°
Partly Cloudy.
Wed
26° 9°
Mostly Clear.
Thu
28° 10°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 10° Mostly Cloudy 31% 14 mph NNW 78%
9 PM 10° Partly Cloudy 6% 13 mph NNW 79%
10 PM 9° Partly Cloudy 6% 12 mph NNW 78%
11 PM 9° Mostly Clear 4% 12 mph NNW 79%
12 AM 8° Mostly Clear 4% 11 mph NNW 79%
1 AM 7° Clear 3% 10 mph NNW 80%
2 AM 7° Clear 3% 10 mph N 82%
3 AM 6° Clear 3% 9 mph N 84%
4 AM 6° Clear 3% 8 mph N 86%
5 AM 3° Clear 3% 7 mph N 87%
6 AM 2° Mostly Clear 3% 6 mph NNW 88%
7 AM 2° Mostly Clear 3% 6 mph N 86%
8 AM 4° Clear 3% 6 mph N 79%
9 AM 7° Clear 3% 6 mph NNE 71%
10 AM 8° Clear 3% 6 mph NNE 64%
11 AM 9° Clear 3% 5 mph NNE 57%
12 PM 11° Clear 3% 4 mph NE 51%
1 PM 13° Clear 3% 3 mph NE 45%
2 PM 13° Clear 3% 3 mph NE 42%
3 PM 14° Clear 3% 2 mph NE 40%
4 PM 14° Clear 3% 2 mph NE 41%
5 PM 12° Clear 3% 2 mph ENE 43%
6 PM 12° Clear 3% 2 mph ENE 46%
7 PM 11° Clear 3% 2 mph E 48%
15-Day Forecast
Today
10/16
Mostly Cloudy
31%
2°
12°
Sat
10/17
Clear
3%
2°
15°
Sun
10/18
Clear
3%
4°
20°
Mon
10/19
Clear
3%
4°
23°
Tue
10/20
Partly Cloudy
3%
8°
25°
Wed
10/21
Mostly Clear
9%
9°
26°
Thu
10/22
Clear
5%
10°
28°
Fri
10/23
Clear
3%
11°
28°
Sat
10/24
Mostly Cloudy
3%
11°
28°
Sun
10/25
Partly Cloudy
15%
12°
25°
Mon
10/26
Drizzle
60%
9°
22°
Tue
10/27
Drizzle
60%
8°
21°
Wed
10/28
Drizzle
60%
8°
21°
Thu
10/29
Drizzle
60%
9°
22°
Fri
10/30
Drizzle
60%
10°
22°
24
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
20 AQI 3.6 µg/m³
O3
Ground-level ozone
Dominant
24 AQI 27 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 24 Good 24 20
Sun 31 Good 31 16
Mon 39 Good 32 39
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
SBCAPE9 J/kg
MLCAPE37 J/kg
MUCAPE74 J/kg
SBCIN-46 J/kg
MLCIN-13 J/kg
Lifted Index10.7
Kinematics
0–6 km Shear60 kt
0–1 km Shear24 kt
Eff. Shear—
0–1 km SRH121
0–3 km SRH119
Eff. SRH—
Storm Motion22° @ 37 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index12.9
Thermo & Levels
PWAT0.61 in
0–3 km LR6.2 °C/km
700–500 LR4.0 °C/km
Total Totals35.9
LCL963 hPa
LFC869 hPa
EL767 hPa
Freezing Lvl4,754 ft