Heat Advisory — Jefferson, IL, Perry, IL, Franklin, IL, Jackson, IL, Williamson, IL, Union, IL, Johnson, IL, Pope, IL, Alexander, IL, Pulaski, IL, Massac, IL, Fulton, KY, Hickman, KY, Carlisle, KY, Ballard, KY, McCracken, KY, Graves, KY, Livingston, KY, Marshall, KY, Calloway, 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 7:00 PM

Jackson County, Illinois, United States

Last updated: 1:26 PM CDT  ·  Refresh
34°C
Feels like 44°
Mostly Clear
▲ 36°  /  ▼ 24°
Wind
5 mph WSW
Humidity
60%
Dew Point
26°
Pressure
29.45 inHg
Visibility
10 mi
UV Index
9.6
Cloud Cover
13%
Sunrise
5:56 AM
Sunset
8:11 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jackson County is currently mostly clear at 35°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 4357 J/kg) — isolated convective development possible. Sunrise: 5:56AM · Sunset: 8:11PM.

Alerts

Heat Advisory
Jefferson, IL, Perry, IL, Franklin, IL, Jackson, IL, Williamson, IL, Union, IL, Johnson, IL, Pope, IL, Alexander, IL, Pulaski, IL, Massac, IL, Fulton, KY, Hickman, KY, Carlisle, KY, Ballard, KY, McCracken, KY, Graves, KY, Livingston, KY, Marshall, KY, Calloway, 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 7:00 PM
45 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
23%
2 PM
36°
34%
3 PM
36°
37%
4 PM
36°
36%
5 PM
36°
35%
6 PM
36°
35%
7 PM
34°
34%
8 PM
33°
38%
9 PM
31°
34%
10 PM
29°
26%
11 PM
29°
27%
12 AM
28°
23%
1 AM
27°
15%
2 AM
27°
15%
3 AM
26°
15%
4 AM
26°
11%
5 AM
24°
12%
6 AM
24°
3%
7 AM
24°
9%
8 AM
27°
9%
9 AM
28°
21%
10 AM
30°
24%
11 AM
31°
24%
12 PM
32°
25%
7-Day Forecast
Today
36° 24°
Mostly Clear with a 36% chance of rain.
Mon
37° 24°
Mostly Clear with a 40% chance of rain.
Tue
36° 22°
Mostly Clear with a 29% chance of rain.
Wed
31° 19°
Clear with a 62% chance of rain.
Thu
32° 18°
Clear with a 35% chance of rain.
Fri
29° 20°
Rain, 90% chance.
Sat
30° 19°
Clear with a 81% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 34° Mostly Clear 23% 5 mph WSW 60%
2 PM 36° Mostly Clear 34% 6 mph WSW 58%
3 PM 36° Mostly Clear 37% 6 mph WSW 57%
4 PM 36° Mostly Clear 36% 6 mph WSW 58%
5 PM 36° Mostly Clear 35% 6 mph WSW 62%
6 PM 36° Mostly Clear 35% 5 mph SW 66%
7 PM 34° Mostly Clear 34% 4 mph SW 71%
8 PM 33° Mostly Clear 38% 4 mph SW 74%
9 PM 31° Partly Cloudy 34% 5 mph SW 77%
10 PM 29° Mostly Cloudy 26% 4 mph SSW 80%
11 PM 29° Mostly Cloudy 27% 3 mph S 84%
12 AM 28° Mostly Cloudy 23% 4 mph SE 87%
1 AM 27° Mostly Cloudy 15% 5 mph SE 90%
2 AM 27° Partly Cloudy 15% 5 mph SE 91%
3 AM 26° Partly Cloudy 15% 6 mph SSE 92%
4 AM 26° Partly Cloudy 11% 6 mph SSE 92%
5 AM 24° Mostly Cloudy 12% 6 mph SSE 90%
6 AM 24° Partly Cloudy 3% 6 mph S 88%
7 AM 24° Partly Cloudy 9% 6 mph S 84%
8 AM 27° Partly Cloudy 9% 5 mph SSW 79%
9 AM 28° Partly Cloudy 21% 5 mph SSW 74%
10 AM 30° Partly Cloudy 24% 5 mph SSW 70%
11 AM 31° Partly Cloudy 24% 4 mph SW 66%
12 PM 32° Partly Cloudy 25% 4 mph SW 62%
15-Day Forecast
Today
7/26
Mostly Clear
36%
24°
36°
Mon
7/27
Mostly Clear
40%
24°
37°
Tue
7/28
Mostly Clear
29%
22°
36°
Wed
7/29
Clear
62%
19°
31°
Thu
7/30
Clear
35%
18°
32°
Fri
7/31
Rain
90%
20°
29°
Sat
8/1
Clear
81%
19°
30°
Sun
8/2
Drizzle
60%
19°
30°
Mon
8/3
Drizzle
60%
19°
32°
Tue
8/4
Drizzle
60%
21°
34°
Wed
8/5
Drizzle
60%
22°
34°
Thu
8/6
Drizzle
60%
22°
32°
Fri
8/7
Drizzle
60%
21°
32°
Sat
8/8
Drizzle
60%
21°
33°
Sun
8/9
Drizzle
60%
22°
33°
45
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
45 AQI 8.2 µg/m³
O3
Ground-level ozone
37 AQI 41 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 45 Good 37 45
Tue 52 Moderate 33 52
Wed 42 Good 42 38
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, 17:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE5815 J/kg
MLCAPE4539 J/kg
MUCAPE5815 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-10.1
Kinematics
0–6 km Shear22 kt
0–1 km Shear3 kt
Eff. Shear27 kt
0–1 km SRH-7
0–3 km SRH-39
Eff. SRH-39
Storm Motion283° @ 19 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index40.1
Thermo & Levels
PWAT2.27 in
0–3 km LR7.3 °C/km
700–500 LR6.3 °C/km
Total Totals50.4
LCL886 hPa
LFC997 hPa
EL124 hPa
Freezing Lvl16,437 ft