Excessive Heat Warning — Greene, IL, Macoupin, IL, Montgomery, IL, Bond, IL, Fayette, IL, Clinton, IL, Marion, IL, Washington, IL, Randolph, 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, Montgomery, MO, Lincoln, MO, Gasconade, MO, Warren, MO, Franklin, MO, Crawford, MO, Washington, MO, St. Francois, MO, Ste. Genevieve, MO, Iron, MO, Madison, MO, Reynolds, MO 9:00 PM Excessive Heat Watch 7:00 PM

Jersey County, Illinois, United States

Last updated: 7:44 AM CDT  ·  Refresh
26°C
Feels like 31°
Mostly Cloudy
▲ 36°  /  ▼ 24°
Wind
4 mph SSW
Humidity
95%
Dew Point
25°
Pressure
29.31 inHg
Visibility
3 mi
UV Index
2.7
Cloud Cover
83%
Sunrise
5:56 AM
Sunset
8:18 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jersey County is currently mostly cloudy at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 4461 J/kg) — isolated convective development possible. Sunrise: 5:56AM · Sunset: 8:18PM.

Alerts

Excessive Heat Warning
Greene, IL, Macoupin, IL, Montgomery, IL, Bond, IL, Fayette, IL, Clinton, IL, Marion, IL, Washington, IL, Randolph, 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, Montgomery, MO, Lincoln, MO, Gasconade, MO, Warren, MO, Franklin, MO, Crawford, MO, Washington, MO, St. Francois, MO, Ste. Genevieve, MO, Iron, MO, Madison, MO, Reynolds, MO
Expires 9:00 PM
Excessive Heat Watch
Expires 7:00 PM
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
30%
8 AM
27°
40%
9 AM
30°
32%
10 AM
32°
31%
11 AM
33°
36%
12 PM
34°
36%
1 PM
35°
35%
2 PM
35°
39%
3 PM
34°
39%
4 PM
34°
48%
5 PM
34°
48%
6 PM
33°
37%
7 PM
31°
15%
8 PM
29°
15%
9 PM
27°
11%
10 PM
26°
3%
11 PM
26°
3%
12 AM
26°
3%
1 AM
26°
3%
2 AM
25°
3%
3 AM
25°
3%
4 AM
25°
3%
5 AM
25°
3%
6 AM
25°
3%
7-Day Forecast
Today
36° 24°
Mostly Cloudy with a 48% chance of rain.
Mon
38° 24°
Mostly Clear with a 20% chance of rain.
Tue
34° 21°
Mostly Clear with a 35% chance of rain.
Wed
31° 19°
Partly Cloudy.
Thu
31° 18°
Rain, 29% chance.
Fri
29° 20°
Rain, 82% chance.
Sat
31° 18°
Drizzle, 52% chance.
TimeTempConditionsPrecipWindHumidity
Now 26° Mostly Cloudy 30% 4 mph SSW 95%
8 AM 27° Mostly Cloudy 40% 5 mph SW 88%
9 AM 30° Mostly Cloudy 32% 6 mph SW 82%
10 AM 32° Partly Cloudy 31% 6 mph WSW 76%
11 AM 33° Partly Cloudy 36% 5 mph WSW 71%
12 PM 34° Mostly Clear 36% 6 mph WSW 66%
1 PM 35° Partly Cloudy 35% 7 mph WNW 65%
2 PM 35° Mostly Cloudy 39% 10 mph NW 64%
3 PM 34° Mostly Cloudy 39% 13 mph NNW 64%
4 PM 34° Mostly Cloudy 48% 11 mph NW 64%
5 PM 34° Mostly Cloudy 48% 6 mph NW 66%
6 PM 33° Overcast 37% 6 mph SSW 70%
7 PM 31° Mostly Cloudy 15% 6 mph SSE 73%
8 PM 29° Mostly Cloudy 15% 7 mph SSE 76%
9 PM 27° Partly Cloudy 11% 8 mph SSE 78%
10 PM 26° Mostly Clear 3% 7 mph S 78%
11 PM 26° Mostly Clear 3% 6 mph SSW 77%
12 AM 26° Mostly Clear 3% 6 mph SSW 76%
1 AM 26° Mostly Clear 3% 6 mph SSW 77%
2 AM 25° Partly Cloudy 3% 6 mph SSW 80%
3 AM 25° Partly Cloudy 3% 6 mph S 83%
4 AM 25° Partly Cloudy 3% 6 mph S 85%
5 AM 25° Partly Cloudy 3% 6 mph SSE 87%
6 AM 25° Partly Cloudy 3% 6 mph SE 88%
15-Day Forecast
Today
7/26
Mostly Cloudy
48%
24°
36°
Mon
7/27
Mostly Clear
20%
24°
38°
Tue
7/28
Mostly Clear
35%
21°
34°
Wed
7/29
Partly Cloudy
13%
19°
31°
Thu
7/30
Rain
29%
18°
31°
Fri
7/31
Rain
82%
20°
29°
Sat
8/1
Drizzle
52%
18°
31°
Sun
8/2
Drizzle
42%
19°
31°
Mon
8/3
Drizzle
44%
19°
32°
Tue
8/4
Drizzle
51%
21°
34°
Wed
8/5
Drizzle
60%
21°
34°
Thu
8/6
Drizzle
60%
21°
34°
Fri
8/7
Drizzle
60%
20°
33°
Sat
8/8
Drizzle
60%
21°
34°
Sun
8/9
Drizzle
60%
21°
36°
55
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
55 AQI 11.4 µg/m³
O3
Ground-level ozone
37 AQI 41 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 55 Moderate 37 55
Tue 48 Good 39 48
Wed 44 Good 44 41
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 Sun Jul 26, 11:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2431 J/kg
MLCAPE2653 J/kg
MUCAPE3084 J/kg
SBCIN-170 J/kg
MLCIN0 J/kg
Lifted Index-4.6
Kinematics
0–6 km Shear15 kt
0–1 km Shear15 kt
Eff. Shear26 kt
0–1 km SRH-11
0–3 km SRH-32
Eff. SRH-32
Storm Motion295° @ 22 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.0
Thermo & Levels
PWAT1.82 in
0–3 km LR4.5 °C/km
700–500 LR5.9 °C/km
Total Totals48.0
LCL978 hPa
LFC722 hPa
EL169 hPa
Freezing Lvl16,568 ft