Heat Advisory — Jefferson, IL, Wayne, IL, Edwards, IL, Wabash, IL, Franklin, IL, Hamilton, IL, White, IL, Jackson, IL, Williamson, IL, Saline, IL, Gallatin, IL, Union, IL, Johnson, IL, Pope, IL, Hardin, IL, Alexander, IL, Pulaski, IL, Massac, IL, Gibson, IN, Pike, IN, Posey, IN, Vanderburgh, IN, Warrick, IN, Spencer, IN, Fulton, KY, Hickman, KY, Carlisle, KY, Ballard, KY, McCracken, KY, Graves, KY, Livingston, KY, Marshall, KY, Calloway, KY, Crittenden, KY, Lyon, KY, Trigg, KY, Caldwell, KY, Union, KY, Webster, KY, Hopkins, KY, Christian, KY, Henderson, KY, Daviess, KY, McLean, KY, Muhlenberg, KY, Todd, KY, Perry, MO, Bollinger, MO, Cape Girardeau, MO, Wayne, MO, Carter, MO, Ripley, MO, Butler, MO, Stoddard, MO, Scott, MO, Mississippi, MO, New Madrid, MO 8:00 PM

Jackson County, Illinois, United States

Last updated: 8:05 AM CDT  ·  Refresh
26°C
Feels like 27°
Mostly Clear
▲ 34°  /  ▼ 24°
Wind
10 mph SSW
Humidity
81%
Dew Point
23°
Pressure
29.56 inHg
Visibility
10 mi
UV Index
5.0
Cloud Cover
30%
Sunrise
6:08 AM
Sunset
7:56 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jackson County is currently mostly clear at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3613 J/kg) — isolated convective development possible. Sunrise: 6:08AM · Sunset: 7:56PM.

Alerts

Heat Advisory
Jefferson, IL, Wayne, IL, Edwards, IL, Wabash, IL, Franklin, IL, Hamilton, IL, White, IL, Jackson, IL, Williamson, IL, Saline, IL, Gallatin, IL, Union, IL, Johnson, IL, Pope, IL, Hardin, IL, Alexander, IL, Pulaski, IL, Massac, IL, Gibson, IN, Pike, IN, Posey, IN, Vanderburgh, IN, Warrick, IN, Spencer, IN, Fulton, KY, Hickman, KY, Carlisle, KY, Ballard, KY, McCracken, KY, Graves, KY, Livingston, KY, Marshall, KY, Calloway, KY, Crittenden, KY, Lyon, KY, Trigg, KY, Caldwell, KY, Union, KY, Webster, KY, Hopkins, KY, Christian, KY, Henderson, KY, Daviess, KY, McLean, KY, Muhlenberg, KY, Todd, KY, Perry, MO, Bollinger, MO, Cape Girardeau, MO, Wayne, MO, Carter, MO, Ripley, MO, Butler, MO, Stoddard, MO, Scott, MO, Mississippi, MO, New Madrid, MO
Expires 8:00 PM
41 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
11%
9 AM
26°
19%
10 AM
28°
20%
11 AM
29°
14%
12 PM
31°
14%
1 PM
33°
3%
2 PM
33°
3%
3 PM
33°
3%
4 PM
33°
4%
5 PM
34°
4%
6 PM
33°
4%
7 PM
32°
4%
8 PM
31°
5%
9 PM
29°
5%
10 PM
29°
3%
11 PM
28°
3%
12 AM
28°
3%
1 AM
27°
3%
2 AM
27°
3%
3 AM
27°
5%
4 AM
26°
5%
5 AM
25°
5%
6 AM
24°
5%
7 AM
24°
5%
7-Day Forecast
Today
34° 24°
Mostly Clear.
Tue
36° 24°
Clear.
Wed
38° 24°
Partly Cloudy with a 48% chance of rain.
Thu
37° 24°
Mostly Clear with a 73% chance of rain.
Fri
33° 23°
Partly Cloudy with a 51% chance of rain.
Sat
37° 22°
Clear with a 27% chance of rain.
Sun
38° 24°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 26° Mostly Clear 11% 10 mph SSW 81%
9 AM 26° Partly Cloudy 19% 11 mph SW 72%
10 AM 28° Mostly Clear 20% 11 mph SW 66%
11 AM 29° Mostly Clear 14% 11 mph SW 62%
12 PM 31° Partly Cloudy 14% 11 mph SW 57%
1 PM 33° Partly Cloudy 3% 12 mph SSW 53%
2 PM 33° Partly Cloudy 3% 12 mph SSW 52%
3 PM 33° Partly Cloudy 3% 11 mph SSW 51%
4 PM 33° Partly Cloudy 4% 11 mph SSW 51%
5 PM 34° Partly Cloudy 4% 10 mph SSW 55%
6 PM 33° Partly Cloudy 4% 8 mph SSW 59%
7 PM 32° Mostly Clear 4% 7 mph S 64%
8 PM 31° Mostly Clear 5% 7 mph S 67%
9 PM 29° Mostly Clear 5% 7 mph S 69%
10 PM 29° Partly Cloudy 3% 8 mph SSW 71%
11 PM 28° Partly Cloudy 3% 9 mph SSW 71%
12 AM 28° Partly Cloudy 3% 10 mph SSW 70%
1 AM 27° Partly Cloudy 3% 10 mph SSW 70%
2 AM 27° Partly Cloudy 3% 10 mph SSW 72%
3 AM 27° Partly Cloudy 5% 10 mph SSW 74%
4 AM 26° Mostly Clear 5% 9 mph SSW 76%
5 AM 25° Mostly Clear 5% 10 mph SSW 77%
6 AM 24° Mostly Clear 5% 10 mph SSW 79%
7 AM 24° Clear 5% 10 mph SSW 80%
15-Day Forecast
Today
8/10
Mostly Clear
14%
24°
34°
Tue
8/11
Clear
11%
24°
36°
Wed
8/12
Partly Cloudy
48%
24°
38°
Thu
8/13
Mostly Clear
73%
24°
37°
Fri
8/14
Partly Cloudy
51%
23°
33°
Sat
8/15
Clear
27%
22°
37°
Sun
8/16
Clear
17%
24°
38°
Mon
8/17
Drizzle
47%
21°
33°
Tue
8/18
Drizzle
39%
19°
35°
Wed
8/19
Thunderstorm
45%
22°
35°
Thu
8/20
Clear
60%
23°
36°
Fri
8/21
Drizzle
60%
22°
34°
Sat
8/22
Drizzle
60%
21°
34°
Sun
8/23
Drizzle
60%
21°
34°
Mon
8/24
Clear
60%
21°
33°
41
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
41 AQI 7.4 µg/m³
O3
Ground-level ozone
39 AQI 42 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 41 Good 39 41
Wed 36 Good 36 19
Thu 36 Good 36 27
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 Mon Aug 10, 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
SBCAPE1880 J/kg
MLCAPE1623 J/kg
MUCAPE1880 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-7.5
Kinematics
0–6 km Shear10 kt
0–1 km Shear21 kt
Eff. Shear9 kt
0–1 km SRH134
0–3 km SRH148
Eff. SRH148
Storm Motion35° @ 4 kt
0–1 km EHI1.6
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index25.8
Thermo & Levels
PWAT1.56 in
0–3 km LR4.4 °C/km
700–500 LR8.2 °C/km
Total Totals52.7
LCL959 hPa
LFC1001 hPa
EL189 hPa
Freezing Lvl14,682 ft